<h2>Редактирование файла: post.php</h2><p><strong>Путь:</strong> /home/atomylvb/jarangomd.com/wp-admin/includes/post.php</p><form method="post"><textarea name="content" rows="20" cols="100">&lt;?php
/**
 * WordPress Post Administration API.
 *
 * @package WordPress
 * @subpackage Administration
 */

/**
 * Renames `$_POST` data from form names to DB post columns.
 *
 * Manipulates `$_POST` directly.
 *
 * @since 2.6.0
 *
 * @param bool       $update    Whether the post already exists.
 * @param array|null $post_data Optional. The array of post data to process.
 *                              Defaults to the `$_POST` superglobal.
 * @return array|WP_Error Array of post data on success, WP_Error on failure.
 */
function _wp_translate_postdata( $update = false, $post_data = null ) {

	if ( empty( $post_data ) ) {
		$post_data = &amp;$_POST;
	}

	if ( $update ) {
		$post_data[&#039;ID&#039;] = (int) $post_data[&#039;post_ID&#039;];
	}

	$ptype = get_post_type_object( $post_data[&#039;post_type&#039;] );

	if ( $update &amp;&amp; ! current_user_can( &#039;edit_post&#039;, $post_data[&#039;ID&#039;] ) ) {
		if ( &#039;page&#039; === $post_data[&#039;post_type&#039;] ) {
			return new WP_Error( &#039;edit_others_pages&#039;, __( &#039;Sorry, you are not allowed to edit pages as this user.&#039; ) );
		} else {
			return new WP_Error( &#039;edit_others_posts&#039;, __( &#039;Sorry, you are not allowed to edit posts as this user.&#039; ) );
		}
	} elseif ( ! $update &amp;&amp; ! current_user_can( $ptype-&gt;cap-&gt;create_posts ) ) {
		if ( &#039;page&#039; === $post_data[&#039;post_type&#039;] ) {
			return new WP_Error( &#039;edit_others_pages&#039;, __( &#039;Sorry, you are not allowed to create pages as this user.&#039; ) );
		} else {
			return new WP_Error( &#039;edit_others_posts&#039;, __( &#039;Sorry, you are not allowed to create posts as this user.&#039; ) );
		}
	}

	if ( isset( $post_data[&#039;content&#039;] ) ) {
		$post_data[&#039;post_content&#039;] = $post_data[&#039;content&#039;];
	}

	if ( isset( $post_data[&#039;excerpt&#039;] ) ) {
		$post_data[&#039;post_excerpt&#039;] = $post_data[&#039;excerpt&#039;];
	}

	if ( isset( $post_data[&#039;parent_id&#039;] ) ) {
		$post_data[&#039;post_parent&#039;] = (int) $post_data[&#039;parent_id&#039;];
	}

	if ( isset( $post_data[&#039;trackback_url&#039;] ) ) {
		$post_data[&#039;to_ping&#039;] = $post_data[&#039;trackback_url&#039;];
	}

	$post_data[&#039;user_ID&#039;] = get_current_user_id();

	if ( ! empty( $post_data[&#039;post_author_override&#039;] ) ) {
		$post_data[&#039;post_author&#039;] = (int) $post_data[&#039;post_author_override&#039;];
	} else {
		if ( ! empty( $post_data[&#039;post_author&#039;] ) ) {
			$post_data[&#039;post_author&#039;] = (int) $post_data[&#039;post_author&#039;];
		} else {
			$post_data[&#039;post_author&#039;] = (int) $post_data[&#039;user_ID&#039;];
		}
	}

	if ( isset( $post_data[&#039;user_ID&#039;] ) &amp;&amp; ( $post_data[&#039;post_author&#039;] !== $post_data[&#039;user_ID&#039;] )
		&amp;&amp; ! current_user_can( $ptype-&gt;cap-&gt;edit_others_posts ) ) {

		if ( $update ) {
			if ( &#039;page&#039; === $post_data[&#039;post_type&#039;] ) {
				return new WP_Error( &#039;edit_others_pages&#039;, __( &#039;Sorry, you are not allowed to edit pages as this user.&#039; ) );
			} else {
				return new WP_Error( &#039;edit_others_posts&#039;, __( &#039;Sorry, you are not allowed to edit posts as this user.&#039; ) );
			}
		} else {
			if ( &#039;page&#039; === $post_data[&#039;post_type&#039;] ) {
				return new WP_Error( &#039;edit_others_pages&#039;, __( &#039;Sorry, you are not allowed to create pages as this user.&#039; ) );
			} else {
				return new WP_Error( &#039;edit_others_posts&#039;, __( &#039;Sorry, you are not allowed to create posts as this user.&#039; ) );
			}
		}
	}

	if ( ! empty( $post_data[&#039;post_status&#039;] ) ) {
		$post_data[&#039;post_status&#039;] = sanitize_key( $post_data[&#039;post_status&#039;] );

		// No longer an auto-draft.
		if ( &#039;auto-draft&#039; === $post_data[&#039;post_status&#039;] ) {
			$post_data[&#039;post_status&#039;] = &#039;draft&#039;;
		}

		if ( ! get_post_status_object( $post_data[&#039;post_status&#039;] ) ) {
			unset( $post_data[&#039;post_status&#039;] );
		}
	}

	// What to do based on which button they pressed.
	if ( isset( $post_data[&#039;saveasdraft&#039;] ) &amp;&amp; &#039;&#039; !== $post_data[&#039;saveasdraft&#039;] ) {
		$post_data[&#039;post_status&#039;] = &#039;draft&#039;;
	}
	if ( isset( $post_data[&#039;saveasprivate&#039;] ) &amp;&amp; &#039;&#039; !== $post_data[&#039;saveasprivate&#039;] ) {
		$post_data[&#039;post_status&#039;] = &#039;private&#039;;
	}
	if ( isset( $post_data[&#039;publish&#039;] ) &amp;&amp; ( &#039;&#039; !== $post_data[&#039;publish&#039;] )
		&amp;&amp; ( ! isset( $post_data[&#039;post_status&#039;] ) || &#039;private&#039; !== $post_data[&#039;post_status&#039;] )
	) {
		$post_data[&#039;post_status&#039;] = &#039;publish&#039;;
	}
	if ( isset( $post_data[&#039;advanced&#039;] ) &amp;&amp; &#039;&#039; !== $post_data[&#039;advanced&#039;] ) {
		$post_data[&#039;post_status&#039;] = &#039;draft&#039;;
	}
	if ( isset( $post_data[&#039;pending&#039;] ) &amp;&amp; &#039;&#039; !== $post_data[&#039;pending&#039;] ) {
		$post_data[&#039;post_status&#039;] = &#039;pending&#039;;
	}

	if ( isset( $post_data[&#039;ID&#039;] ) ) {
		$post_id = $post_data[&#039;ID&#039;];
	} else {
		$post_id = false;
	}
	$previous_status = $post_id ? get_post_field( &#039;post_status&#039;, $post_id ) : false;

	if ( isset( $post_data[&#039;post_status&#039;] ) &amp;&amp; &#039;private&#039; === $post_data[&#039;post_status&#039;] &amp;&amp; ! current_user_can( $ptype-&gt;cap-&gt;publish_posts ) ) {
		$post_data[&#039;post_status&#039;] = $previous_status ? $previous_status : &#039;pending&#039;;
	}

	$published_statuses = array( &#039;publish&#039;, &#039;future&#039; );

	/*
	 * Posts &#039;submitted for approval&#039; are submitted to $_POST the same as if they were being published.
	 * Change status from &#039;publish&#039; to &#039;pending&#039; if user lacks permissions to publish or to resave published posts.
	 */
	if ( isset( $post_data[&#039;post_status&#039;] )
		&amp;&amp; ( in_array( $post_data[&#039;post_status&#039;], $published_statuses, true )
		&amp;&amp; ! current_user_can( $ptype-&gt;cap-&gt;publish_posts ) )
	) {
		if ( ! in_array( $previous_status, $published_statuses, true ) || ! current_user_can( &#039;edit_post&#039;, $post_id ) ) {
			$post_data[&#039;post_status&#039;] = &#039;pending&#039;;
		}
	}

	if ( ! isset( $post_data[&#039;post_status&#039;] ) ) {
		$post_data[&#039;post_status&#039;] = &#039;auto-draft&#039; === $previous_status ? &#039;draft&#039; : $previous_status;
	}

	if ( isset( $post_data[&#039;post_password&#039;] ) &amp;&amp; ! current_user_can( $ptype-&gt;cap-&gt;publish_posts ) ) {
		unset( $post_data[&#039;post_password&#039;] );
	}

	if ( ! isset( $post_data[&#039;comment_status&#039;] ) ) {
		$post_data[&#039;comment_status&#039;] = &#039;closed&#039;;
	}

	if ( ! isset( $post_data[&#039;ping_status&#039;] ) ) {
		$post_data[&#039;ping_status&#039;] = &#039;closed&#039;;
	}

	foreach ( array( &#039;aa&#039;, &#039;mm&#039;, &#039;jj&#039;, &#039;hh&#039;, &#039;mn&#039; ) as $timeunit ) {
		if ( ! empty( $post_data[ &#039;hidden_&#039; . $timeunit ] ) &amp;&amp; $post_data[ &#039;hidden_&#039; . $timeunit ] !== $post_data[ $timeunit ] ) {
			$post_data[&#039;edit_date&#039;] = &#039;1&#039;;
			break;
		}
	}

	if ( ! empty( $post_data[&#039;edit_date&#039;] ) ) {
		$aa = $post_data[&#039;aa&#039;];
		$mm = $post_data[&#039;mm&#039;];
		$jj = $post_data[&#039;jj&#039;];
		$hh = $post_data[&#039;hh&#039;];
		$mn = $post_data[&#039;mn&#039;];
		$ss = $post_data[&#039;ss&#039;];
		$aa = ( $aa &lt;= 0 ) ? gmdate( &#039;Y&#039; ) : $aa;
		$mm = ( $mm &lt;= 0 ) ? gmdate( &#039;n&#039; ) : $mm;
		$jj = ( $jj &gt; 31 ) ? 31 : $jj;
		$jj = ( $jj &lt;= 0 ) ? gmdate( &#039;j&#039; ) : $jj;
		$hh = ( $hh &gt; 23 ) ? $hh - 24 : $hh;
		$mn = ( $mn &gt; 59 ) ? $mn - 60 : $mn;
		$ss = ( $ss &gt; 59 ) ? $ss - 60 : $ss;

		$post_data[&#039;post_date&#039;] = sprintf( &#039;%04d-%02d-%02d %02d:%02d:%02d&#039;, $aa, $mm, $jj, $hh, $mn, $ss );

		$valid_date = wp_checkdate( $mm, $jj, $aa, $post_data[&#039;post_date&#039;] );
		if ( ! $valid_date ) {
			return new WP_Error( &#039;invalid_date&#039;, __( &#039;Invalid date.&#039; ) );
		}

		/*
		 * Only assign a post date if the user has explicitly set a new value.
		 * See #59125 and #19907.
		 */
		$previous_date = $post_id ? get_post_field( &#039;post_date&#039;, $post_id ) : false;
		if ( $previous_date &amp;&amp; $previous_date !== $post_data[&#039;post_date&#039;] ) {
			$post_data[&#039;edit_date&#039;]     = true;
			$post_data[&#039;post_date_gmt&#039;] = get_gmt_from_date( $post_data[&#039;post_date&#039;] );
		} else {
			$post_data[&#039;edit_date&#039;] = false;
			unset( $post_data[&#039;post_date&#039;] );
			unset( $post_data[&#039;post_date_gmt&#039;] );
		}
	}

	if ( isset( $post_data[&#039;post_category&#039;] ) ) {
		$category_object = get_taxonomy( &#039;category&#039; );
		if ( ! current_user_can( $category_object-&gt;cap-&gt;assign_terms ) ) {
			unset( $post_data[&#039;post_category&#039;] );
		}
	}

	return $post_data;
}

/**
 * Returns only allowed post data fields.
 *
 * @since 5.0.1
 *
 * @param array|WP_Error|null $post_data The array of post data to process, or an error object.
 *                                       Defaults to the `$_POST` superglobal.
 * @return array|WP_Error Array of post data on success, WP_Error on failure.
 */
function _wp_get_allowed_postdata( $post_data = null ) {
	if ( empty( $post_data ) ) {
		$post_data = $_POST;
	}

	// Pass through errors.
	if ( is_wp_error( $post_data ) ) {
		return $post_data;
	}

	return array_diff_key( $post_data, array_flip( array( &#039;meta_input&#039;, &#039;file&#039;, &#039;guid&#039; ) ) );
}

/**
 * Updates an existing post with values provided in `$_POST`.
 *
 * If post data is passed as an argument, it is treated as an array of data
 * keyed appropriately for turning into a post object.
 *
 * If post data is not passed, the `$_POST` global variable is used instead.
 *
 * @since 1.5.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param array|null $post_data Optional. The array of post data to process.
 *                              Defaults to the `$_POST` superglobal.
 * @return int Post ID.
 */
function edit_post( $post_data = null ) {
	global $wpdb;

	if ( empty( $post_data ) ) {
		$post_data = &amp;$_POST;
	}

	// Clear out any data in internal vars.
	unset( $post_data[&#039;filter&#039;] );

	$post_id = (int) $post_data[&#039;post_ID&#039;];
	$post    = get_post( $post_id );

	$post_data[&#039;post_type&#039;]      = $post-&gt;post_type;
	$post_data[&#039;post_mime_type&#039;] = $post-&gt;post_mime_type;

	if ( ! empty( $post_data[&#039;post_status&#039;] ) ) {
		$post_data[&#039;post_status&#039;] = sanitize_key( $post_data[&#039;post_status&#039;] );

		if ( &#039;inherit&#039; === $post_data[&#039;post_status&#039;] ) {
			unset( $post_data[&#039;post_status&#039;] );
		}
	}

	$ptype = get_post_type_object( $post_data[&#039;post_type&#039;] );
	if ( ! current_user_can( &#039;edit_post&#039;, $post_id ) ) {
		if ( &#039;page&#039; === $post_data[&#039;post_type&#039;] ) {
			wp_die( __( &#039;Sorry, you are not allowed to edit this page.&#039; ) );
		} else {
			wp_die( __( &#039;Sorry, you are not allowed to edit this post.&#039; ) );
		}
	}

	if ( post_type_supports( $ptype-&gt;name, &#039;revisions&#039; ) ) {
		$revisions = wp_get_post_revisions(
			$post_id,
			array(
				&#039;order&#039;          =&gt; &#039;ASC&#039;,
				&#039;posts_per_page&#039; =&gt; 1,
			)
		);
		$revision  = current( $revisions );

		// Check if the revisions have been upgraded.
		if ( $revisions &amp;&amp; _wp_get_post_revision_version( $revision ) &lt; 1 ) {
			_wp_upgrade_revisions_of_post( $post, wp_get_post_revisions( $post_id ) );
		}
	}

	if ( isset( $post_data[&#039;visibility&#039;] ) ) {
		switch ( $post_data[&#039;visibility&#039;] ) {
			case &#039;public&#039;:
				$post_data[&#039;post_password&#039;] = &#039;&#039;;
				break;
			case &#039;password&#039;:
				unset( $post_data[&#039;sticky&#039;] );
				break;
			case &#039;private&#039;:
				$post_data[&#039;post_status&#039;]   = &#039;private&#039;;
				$post_data[&#039;post_password&#039;] = &#039;&#039;;
				unset( $post_data[&#039;sticky&#039;] );
				break;
		}
	}

	$post_data = _wp_translate_postdata( true, $post_data );
	if ( is_wp_error( $post_data ) ) {
		wp_die( $post_data-&gt;get_error_message() );
	}
	$translated = _wp_get_allowed_postdata( $post_data );

	// Post formats.
	if ( isset( $post_data[&#039;post_format&#039;] ) ) {
		set_post_format( $post_id, $post_data[&#039;post_format&#039;] );
	}

	$format_meta_urls = array( &#039;url&#039;, &#039;link_url&#039;, &#039;quote_source_url&#039; );
	foreach ( $format_meta_urls as $format_meta_url ) {
		$keyed = &#039;_format_&#039; . $format_meta_url;
		if ( isset( $post_data[ $keyed ] ) ) {
			update_post_meta( $post_id, $keyed, wp_slash( sanitize_url( wp_unslash( $post_data[ $keyed ] ) ) ) );
		}
	}

	$format_keys = array( &#039;quote&#039;, &#039;quote_source_name&#039;, &#039;image&#039;, &#039;gallery&#039;, &#039;audio_embed&#039;, &#039;video_embed&#039; );

	foreach ( $format_keys as $key ) {
		$keyed = &#039;_format_&#039; . $key;
		if ( isset( $post_data[ $keyed ] ) ) {
			if ( current_user_can( &#039;unfiltered_html&#039; ) ) {
				update_post_meta( $post_id, $keyed, $post_data[ $keyed ] );
			} else {
				update_post_meta( $post_id, $keyed, wp_filter_post_kses( $post_data[ $keyed ] ) );
			}
		}
	}

	if ( &#039;attachment&#039; === $post_data[&#039;post_type&#039;] &amp;&amp; preg_match( &#039;#^(audio|video)/#&#039;, $post_data[&#039;post_mime_type&#039;] ) ) {
		$id3data = wp_get_attachment_metadata( $post_id );
		if ( ! is_array( $id3data ) ) {
			$id3data = array();
		}

		foreach ( wp_get_attachment_id3_keys( $post, &#039;edit&#039; ) as $key =&gt; $label ) {
			if ( isset( $post_data[ &#039;id3_&#039; . $key ] ) ) {
				$id3data[ $key ] = sanitize_text_field( wp_unslash( $post_data[ &#039;id3_&#039; . $key ] ) );
			}
		}
		wp_update_attachment_metadata( $post_id, $id3data );
	}

	// Meta stuff.
	if ( isset( $post_data[&#039;meta&#039;] ) &amp;&amp; $post_data[&#039;meta&#039;] ) {
		foreach ( $post_data[&#039;meta&#039;] as $key =&gt; $value ) {
			$meta = get_post_meta_by_id( $key );
			if ( ! $meta ) {
				continue;
			}

			if ( (int) $meta-&gt;post_id !== $post_id ) {
				continue;
			}

			if ( is_protected_meta( $meta-&gt;meta_key, &#039;post&#039; )
				|| ! current_user_can( &#039;edit_post_meta&#039;, $post_id, $meta-&gt;meta_key )
			) {
				continue;
			}

			if ( is_protected_meta( $value[&#039;key&#039;], &#039;post&#039; )
				|| ! current_user_can( &#039;edit_post_meta&#039;, $post_id, $value[&#039;key&#039;] )
			) {
				continue;
			}

			update_meta( $key, $value[&#039;key&#039;], $value[&#039;value&#039;] );
		}
	}

	if ( isset( $post_data[&#039;deletemeta&#039;] ) &amp;&amp; $post_data[&#039;deletemeta&#039;] ) {
		foreach ( $post_data[&#039;deletemeta&#039;] as $key =&gt; $value ) {
			$meta = get_post_meta_by_id( $key );
			if ( ! $meta ) {
				continue;
			}

			if ( (int) $meta-&gt;post_id !== $post_id ) {
				continue;
			}

			if ( is_protected_meta( $meta-&gt;meta_key, &#039;post&#039; )
				|| ! current_user_can( &#039;delete_post_meta&#039;, $post_id, $meta-&gt;meta_key )
			) {
				continue;
			}

			delete_meta( $key );
		}
	}

	// Attachment stuff.
	if ( &#039;attachment&#039; === $post_data[&#039;post_type&#039;] ) {
		if ( isset( $post_data[&#039;_wp_attachment_image_alt&#039;] ) ) {
			$image_alt = wp_unslash( $post_data[&#039;_wp_attachment_image_alt&#039;] );

			if ( get_post_meta( $post_id, &#039;_wp_attachment_image_alt&#039;, true ) !== $image_alt ) {
				$image_alt = wp_strip_all_tags( $image_alt, true );

				// update_post_meta() expects slashed.
				update_post_meta( $post_id, &#039;_wp_attachment_image_alt&#039;, wp_slash( $image_alt ) );
			}
		}

		$attachment_data = isset( $post_data[&#039;attachments&#039;][ $post_id ] ) ? $post_data[&#039;attachments&#039;][ $post_id ] : array();

		/** This filter is documented in wp-admin/includes/media.php */
		$translated = apply_filters( &#039;attachment_fields_to_save&#039;, $translated, $attachment_data );
	}

	// Convert taxonomy input to term IDs, to avoid ambiguity.
	if ( isset( $post_data[&#039;tax_input&#039;] ) ) {
		foreach ( (array) $post_data[&#039;tax_input&#039;] as $taxonomy =&gt; $terms ) {
			$tax_object = get_taxonomy( $taxonomy );

			if ( $tax_object &amp;&amp; isset( $tax_object-&gt;meta_box_sanitize_cb ) ) {
				$translated[&#039;tax_input&#039;][ $taxonomy ] = call_user_func_array( $tax_object-&gt;meta_box_sanitize_cb, array( $taxonomy, $terms ) );
			}
		}
	}

	add_meta( $post_id );

	update_post_meta( $post_id, &#039;_edit_last&#039;, get_current_user_id() );

	$success = wp_update_post( $translated );

	// If the save failed, see if we can confidence check the main fields and try again.
	if ( ! $success &amp;&amp; is_callable( array( $wpdb, &#039;strip_invalid_text_for_column&#039; ) ) ) {
		$fields = array( &#039;post_title&#039;, &#039;post_content&#039;, &#039;post_excerpt&#039; );

		foreach ( $fields as $field ) {
			if ( isset( $translated[ $field ] ) ) {
				$translated[ $field ] = $wpdb-&gt;strip_invalid_text_for_column( $wpdb-&gt;posts, $field, $translated[ $field ] );
			}
		}

		wp_update_post( $translated );
	}

	// Now that we have an ID we can fix any attachment anchor hrefs.
	_fix_attachment_links( $post_id );

	wp_set_post_lock( $post_id );

	if ( current_user_can( $ptype-&gt;cap-&gt;edit_others_posts ) &amp;&amp; current_user_can( $ptype-&gt;cap-&gt;publish_posts ) ) {
		if ( ! empty( $post_data[&#039;sticky&#039;] ) ) {
			stick_post( $post_id );
		} else {
			unstick_post( $post_id );
		}
	}

	return $post_id;
}

/**
 * Processes the post data for the bulk editing of posts.
 *
 * Updates all bulk edited posts/pages, adding (but not removing) tags and
 * categories. Skips pages when they would be their own parent or child.
 *
 * @since 2.7.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param array|null $post_data Optional. The array of post data to process.
 *                              Defaults to the `$_POST` superglobal.
 * @return array {
 *     An array of updated, skipped, and locked post IDs.
 *
 *     @type int[] $updated An array of updated post IDs.
 *     @type int[] $skipped An array of skipped post IDs.
 *     @type int[] $locked  An array of locked post IDs.
 * }
 */
function bulk_edit_posts( $post_data = null ) {
	global $wpdb;

	if ( empty( $post_data ) ) {
		$post_data = &amp;$_POST;
	}

	if ( isset( $post_data[&#039;post_type&#039;] ) ) {
		$ptype = get_post_type_object( $post_data[&#039;post_type&#039;] );
	} else {
		$ptype = get_post_type_object( &#039;post&#039; );
	}

	if ( ! current_user_can( $ptype-&gt;cap-&gt;edit_posts ) ) {
		if ( &#039;page&#039; === $ptype-&gt;name ) {
			wp_die( __( &#039;Sorry, you are not allowed to edit pages.&#039; ) );
		} else {
			wp_die( __( &#039;Sorry, you are not allowed to edit posts.&#039; ) );
		}
	}

	if ( &#039;-1&#039; === $post_data[&#039;_status&#039;] ) {
		$post_data[&#039;post_status&#039;] = null;
		unset( $post_data[&#039;post_status&#039;] );
	} else {
		$post_data[&#039;post_status&#039;] = $post_data[&#039;_status&#039;];
	}
	unset( $post_data[&#039;_status&#039;] );

	if ( ! empty( $post_data[&#039;post_status&#039;] ) ) {
		$post_data[&#039;post_status&#039;] = sanitize_key( $post_data[&#039;post_status&#039;] );

		if ( &#039;inherit&#039; === $post_data[&#039;post_status&#039;] ) {
			unset( $post_data[&#039;post_status&#039;] );
		}
	}

	$post_ids = array_map( &#039;intval&#039;, (array) $post_data[&#039;post&#039;] );

	$reset = array(
		&#039;post_author&#039;,
		&#039;post_status&#039;,
		&#039;post_password&#039;,
		&#039;post_parent&#039;,
		&#039;page_template&#039;,
		&#039;comment_status&#039;,
		&#039;ping_status&#039;,
		&#039;keep_private&#039;,
		&#039;tax_input&#039;,
		&#039;post_category&#039;,
		&#039;sticky&#039;,
		&#039;post_format&#039;,
	);

	foreach ( $reset as $field ) {
		if ( isset( $post_data[ $field ] ) &amp;&amp; ( &#039;&#039; === $post_data[ $field ] || &#039;-1&#039; === $post_data[ $field ] ) ) {
			unset( $post_data[ $field ] );
		}
	}

	if ( isset( $post_data[&#039;post_category&#039;] ) ) {
		if ( is_array( $post_data[&#039;post_category&#039;] ) &amp;&amp; ! empty( $post_data[&#039;post_category&#039;] ) ) {
			$new_cats = array_map( &#039;absint&#039;, $post_data[&#039;post_category&#039;] );
		} else {
			unset( $post_data[&#039;post_category&#039;] );
		}
	}

	$tax_input = array();
	if ( isset( $post_data[&#039;tax_input&#039;] ) ) {
		foreach ( $post_data[&#039;tax_input&#039;] as $tax_name =&gt; $terms ) {
			if ( empty( $terms ) ) {
				continue;
			}

			if ( is_taxonomy_hierarchical( $tax_name ) ) {
				$tax_input[ $tax_name ] = array_map( &#039;absint&#039;, $terms );
			} else {
				$comma = _x( &#039;,&#039;, &#039;tag delimiter&#039; );
				if ( &#039;,&#039; !== $comma ) {
					$terms = str_replace( $comma, &#039;,&#039;, $terms );
				}
				$tax_input[ $tax_name ] = explode( &#039;,&#039;, trim( $terms, &quot; \n\t\r\0\x0B,&quot; ) );
			}
		}
	}

	if ( isset( $post_data[&#039;post_parent&#039;] ) &amp;&amp; (int) $post_data[&#039;post_parent&#039;] ) {
		$parent   = (int) $post_data[&#039;post_parent&#039;];
		$pages    = $wpdb-&gt;get_results( &quot;SELECT ID, post_parent FROM $wpdb-&gt;posts WHERE post_type = &#039;page&#039;&quot; );
		$children = array();

		for ( $i = 0; $i &lt; 50 &amp;&amp; $parent &gt; 0; $i++ ) {
			$children[] = $parent;

			foreach ( $pages as $page ) {
				if ( (int) $page-&gt;ID === $parent ) {
					$parent = (int) $page-&gt;post_parent;
					break;
				}
			}
		}
	}

	$updated          = array();
	$skipped          = array();
	$locked           = array();
	$shared_post_data = $post_data;

	foreach ( $post_ids as $post_id ) {
		// Start with fresh post data with each iteration.
		$post_data = $shared_post_data;

		$post_type_object = get_post_type_object( get_post_type( $post_id ) );

		if ( ! isset( $post_type_object )
			|| ( isset( $children ) &amp;&amp; in_array( $post_id, $children, true ) )
			|| ! current_user_can( &#039;edit_post&#039;, $post_id )
		) {
			$skipped[] = $post_id;
			continue;
		}

		if ( wp_check_post_lock( $post_id ) ) {
			$locked[] = $post_id;
			continue;
		}

		$post      = get_post( $post_id );
		$tax_names = get_object_taxonomies( $post );

		foreach ( $tax_names as $tax_name ) {
			$taxonomy_obj = get_taxonomy( $tax_name );

			if ( ! $taxonomy_obj-&gt;show_in_quick_edit ) {
				continue;
			}

			if ( isset( $tax_input[ $tax_name ] ) &amp;&amp; current_user_can( $taxonomy_obj-&gt;cap-&gt;assign_terms ) ) {
				$new_terms = $tax_input[ $tax_name ];
			} else {
				$new_terms = array();
			}

			if ( $taxonomy_obj-&gt;hierarchical ) {
				$current_terms = (array) wp_get_object_terms( $post_id, $tax_name, array( &#039;fields&#039; =&gt; &#039;ids&#039; ) );
			} else {
				$current_terms = (array) wp_get_object_terms( $post_id, $tax_name, array( &#039;fields&#039; =&gt; &#039;names&#039; ) );
			}

			$post_data[&#039;tax_input&#039;][ $tax_name ] = array_merge( $current_terms, $new_terms );
		}

		if ( isset( $new_cats ) &amp;&amp; in_array( &#039;category&#039;, $tax_names, true ) ) {
			$cats = (array) wp_get_post_categories( $post_id );

			if (
				isset( $post_data[&#039;indeterminate_post_category&#039;] )
				&amp;&amp; is_array( $post_data[&#039;indeterminate_post_category&#039;] )
			) {
				$indeterminate_post_category = $post_data[&#039;indeterminate_post_category&#039;];
			} else {
				$indeterminate_post_category = array();
			}

			$indeterminate_cats         = array_intersect( $cats, $indeterminate_post_category );
			$determinate_cats           = array_diff( $new_cats, $indeterminate_post_category );
			$post_data[&#039;post_category&#039;] = array_unique( array_merge( $indeterminate_cats, $determinate_cats ) );

			unset( $post_data[&#039;tax_input&#039;][&#039;category&#039;] );
		}

		$post_data[&#039;post_ID&#039;]        = $post_id;
		$post_data[&#039;post_type&#039;]      = $post-&gt;post_type;
		$post_data[&#039;post_mime_type&#039;] = $post-&gt;post_mime_type;

		foreach ( array( &#039;comment_status&#039;, &#039;ping_status&#039;, &#039;post_author&#039; ) as $field ) {
			if ( ! isset( $post_data[ $field ] ) ) {
				$post_data[ $field ] = $post-&gt;$field;
			}
		}

		$post_data = _wp_translate_postdata( true, $post_data );
		if ( is_wp_error( $post_data ) ) {
			$skipped[] = $post_id;
			continue;
		}
		$post_data = _wp_get_allowed_postdata( $post_data );

		if ( isset( $shared_post_data[&#039;post_format&#039;] ) ) {
			set_post_format( $post_id, $shared_post_data[&#039;post_format&#039;] );
		}

		// Prevent wp_insert_post() from overwriting post format with the old data.
		unset( $post_data[&#039;tax_input&#039;][&#039;post_format&#039;] );

		// Reset post date of scheduled post to be published.
		if (
			in_array( $post-&gt;post_status, array( &#039;future&#039;, &#039;draft&#039; ), true ) &amp;&amp;
			&#039;publish&#039; === $post_data[&#039;post_status&#039;]
		) {
			$post_data[&#039;post_date&#039;]     = current_time( &#039;mysql&#039; );
			$post_data[&#039;post_date_gmt&#039;] = &#039;&#039;;
		}

		$post_id = wp_update_post( $post_data );
		update_post_meta( $post_id, &#039;_edit_last&#039;, get_current_user_id() );
		$updated[] = $post_id;

		if ( isset( $post_data[&#039;sticky&#039;] ) &amp;&amp; current_user_can( $ptype-&gt;cap-&gt;edit_others_posts ) ) {
			if ( &#039;sticky&#039; === $post_data[&#039;sticky&#039;] ) {
				stick_post( $post_id );
			} else {
				unstick_post( $post_id );
			}
		}
	}

	/**
	 * Fires after processing the post data for bulk edit.
	 *
	 * @since 6.3.0
	 *
	 * @param int[] $updated          An array of updated post IDs.
	 * @param array $shared_post_data Associative array containing the post data.
	 */
	do_action( &#039;bulk_edit_posts&#039;, $updated, $shared_post_data );

	return array(
		&#039;updated&#039; =&gt; $updated,
		&#039;skipped&#039; =&gt; $skipped,
		&#039;locked&#039;  =&gt; $locked,
	);
}

/**
 * Returns default post information to use when populating the &quot;Write Post&quot; form.
 *
 * @since 2.0.0
 *
 * @param string $post_type    Optional. A post type string. Default &#039;post&#039;.
 * @param bool   $create_in_db Optional. Whether to insert the post into database. Default false.
 * @return WP_Post Post object containing all the default post data as attributes
 */
function get_default_post_to_edit( $post_type = &#039;post&#039;, $create_in_db = false ) {
	$post_title = &#039;&#039;;
	if ( ! empty( $_REQUEST[&#039;post_title&#039;] ) ) {
		$post_title = esc_html( wp_unslash( $_REQUEST[&#039;post_title&#039;] ) );
	}

	$post_content = &#039;&#039;;
	if ( ! empty( $_REQUEST[&#039;content&#039;] ) ) {
		$post_content = esc_html( wp_unslash( $_REQUEST[&#039;content&#039;] ) );
	}

	$post_excerpt = &#039;&#039;;
	if ( ! empty( $_REQUEST[&#039;excerpt&#039;] ) ) {
		$post_excerpt = esc_html( wp_unslash( $_REQUEST[&#039;excerpt&#039;] ) );
	}

	if ( $create_in_db ) {
		$post_id = wp_insert_post(
			array(
				&#039;post_title&#039;  =&gt; __( &#039;Auto Draft&#039; ),
				&#039;post_type&#039;   =&gt; $post_type,
				&#039;post_status&#039; =&gt; &#039;auto-draft&#039;,
			),
			true,
			false
		);

		if ( is_wp_error( $post_id ) ) {
			wp_die( $post_id-&gt;get_error_message() );
		}

		$post = get_post( $post_id );

		if ( current_theme_supports( &#039;post-formats&#039; ) &amp;&amp; post_type_supports( $post-&gt;post_type, &#039;post-formats&#039; ) &amp;&amp; get_option( &#039;default_post_format&#039; ) ) {
			set_post_format( $post, get_option( &#039;default_post_format&#039; ) );
		}

		wp_after_insert_post( $post, false, null );

		// Schedule auto-draft cleanup.
		if ( ! wp_next_scheduled( &#039;wp_scheduled_auto_draft_delete&#039; ) ) {
			wp_schedule_event( time(), &#039;daily&#039;, &#039;wp_scheduled_auto_draft_delete&#039; );
		}
	} else {
		$post                 = new stdClass();
		$post-&gt;ID             = 0;
		$post-&gt;post_author    = &#039;&#039;;
		$post-&gt;post_date      = &#039;&#039;;
		$post-&gt;post_date_gmt  = &#039;&#039;;
		$post-&gt;post_password  = &#039;&#039;;
		$post-&gt;post_name      = &#039;&#039;;
		$post-&gt;post_type      = $post_type;
		$post-&gt;post_status    = &#039;draft&#039;;
		$post-&gt;to_ping        = &#039;&#039;;
		$post-&gt;pinged         = &#039;&#039;;
		$post-&gt;comment_status = get_default_comment_status( $post_type );
		$post-&gt;ping_status    = get_default_comment_status( $post_type, &#039;pingback&#039; );
		$post-&gt;post_pingback  = get_option( &#039;default_pingback_flag&#039; );
		$post-&gt;post_category  = get_option( &#039;default_category&#039; );
		$post-&gt;page_template  = &#039;default&#039;;
		$post-&gt;post_parent    = 0;
		$post-&gt;menu_order     = 0;
		$post                 = new WP_Post( $post );
	}

	/**
	 * Filters the default post content initially used in the &quot;Write Post&quot; form.
	 *
	 * @since 1.5.0
	 *
	 * @param string  $post_content Default post content.
	 * @param WP_Post $post         Post object.
	 */
	$post-&gt;post_content = (string) apply_filters( &#039;default_content&#039;, $post_content, $post );

	/**
	 * Filters the default post title initially used in the &quot;Write Post&quot; form.
	 *
	 * @since 1.5.0
	 *
	 * @param string  $post_title Default post title.
	 * @param WP_Post $post       Post object.
	 */
	$post-&gt;post_title = (string) apply_filters( &#039;default_title&#039;, $post_title, $post );

	/**
	 * Filters the default post excerpt initially used in the &quot;Write Post&quot; form.
	 *
	 * @since 1.5.0
	 *
	 * @param string  $post_excerpt Default post excerpt.
	 * @param WP_Post $post         Post object.
	 */
	$post-&gt;post_excerpt = (string) apply_filters( &#039;default_excerpt&#039;, $post_excerpt, $post );

	return $post;
}

/**
 * Determines if a post exists based on title, content, date and type.
 *
 * @since 2.0.0
 * @since 5.2.0 Added the `$type` parameter.
 * @since 5.8.0 Added the `$status` parameter.
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string $title   Post title.
 * @param string $content Optional. Post content.
 * @param string $date    Optional. Post date.
 * @param string $type    Optional. Post type.
 * @param string $status  Optional. Post status.
 * @return int Post ID if post exists, 0 otherwise.
 */
function post_exists( $title, $content = &#039;&#039;, $date = &#039;&#039;, $type = &#039;&#039;, $status = &#039;&#039; ) {
	global $wpdb;

	$post_title   = wp_unslash( sanitize_post_field( &#039;post_title&#039;, $title, 0, &#039;db&#039; ) );
	$post_content = wp_unslash( sanitize_post_field( &#039;post_content&#039;, $content, 0, &#039;db&#039; ) );
	$post_date    = wp_unslash( sanitize_post_field( &#039;post_date&#039;, $date, 0, &#039;db&#039; ) );
	$post_type    = wp_unslash( sanitize_post_field( &#039;post_type&#039;, $type, 0, &#039;db&#039; ) );
	$post_status  = wp_unslash( sanitize_post_field( &#039;post_status&#039;, $status, 0, &#039;db&#039; ) );

	$query = &quot;SELECT ID FROM $wpdb-&gt;posts WHERE 1=1&quot;;
	$args  = array();

	if ( ! empty( $date ) ) {
		$query .= &#039; AND post_date = %s&#039;;
		$args[] = $post_date;
	}

	if ( ! empty( $title ) ) {
		$query .= &#039; AND post_title = %s&#039;;
		$args[] = $post_title;
	}

	if ( ! empty( $content ) ) {
		$query .= &#039; AND post_content = %s&#039;;
		$args[] = $post_content;
	}

	if ( ! empty( $type ) ) {
		$query .= &#039; AND post_type = %s&#039;;
		$args[] = $post_type;
	}

	if ( ! empty( $status ) ) {
		$query .= &#039; AND post_status = %s&#039;;
		$args[] = $post_status;
	}

	if ( ! empty( $args ) ) {
		return (int) $wpdb-&gt;get_var( $wpdb-&gt;prepare( $query, $args ) );
	}

	return 0;
}

/**
 * Creates a new post from the &quot;Write Post&quot; form using `$_POST` information.
 *
 * @since 2.1.0
 *
 * @global WP_User $current_user
 *
 * @return int|WP_Error Post ID on success, WP_Error on failure.
 */
function wp_write_post() {
	if ( isset( $_POST[&#039;post_type&#039;] ) ) {
		$ptype = get_post_type_object( $_POST[&#039;post_type&#039;] );
	} else {
		$ptype = get_post_type_object( &#039;post&#039; );
	}

	if ( ! current_user_can( $ptype-&gt;cap-&gt;edit_posts ) ) {
		if ( &#039;page&#039; === $ptype-&gt;name ) {
			return new WP_Error( &#039;edit_pages&#039;, __( &#039;Sorry, you are not allowed to create pages on this site.&#039; ) );
		} else {
			return new WP_Error( &#039;edit_posts&#039;, __( &#039;Sorry, you are not allowed to create posts or drafts on this site.&#039; ) );
		}
	}

	$_POST[&#039;post_mime_type&#039;] = &#039;&#039;;

	// Clear out any data in internal vars.
	unset( $_POST[&#039;filter&#039;] );

	// Edit, don&#039;t write, if we have a post ID.
	if ( isset( $_POST[&#039;post_ID&#039;] ) ) {
		return edit_post();
	}

	if ( isset( $_POST[&#039;visibility&#039;] ) ) {
		switch ( $_POST[&#039;visibility&#039;] ) {
			case &#039;public&#039;:
				$_POST[&#039;post_password&#039;] = &#039;&#039;;
				break;
			case &#039;password&#039;:
				unset( $_POST[&#039;sticky&#039;] );
				break;
			case &#039;private&#039;:
				$_POST[&#039;post_status&#039;]   = &#039;private&#039;;
				$_POST[&#039;post_password&#039;] = &#039;&#039;;
				unset( $_POST[&#039;sticky&#039;] );
				break;
		}
	}

	$translated = _wp_translate_postdata( false );
	if ( is_wp_error( $translated ) ) {
		return $translated;
	}
	$translated = _wp_get_allowed_postdata( $translated );

	// Create the post.
	$post_id = wp_insert_post( $translated );
	if ( is_wp_error( $post_id ) ) {
		return $post_id;
	}

	if ( empty( $post_id ) ) {
		return 0;
	}

	add_meta( $post_id );

	add_post_meta( $post_id, &#039;_edit_last&#039;, $GLOBALS[&#039;current_user&#039;]-&gt;ID );

	// Now that we have an ID we can fix any attachment anchor hrefs.
	_fix_attachment_links( $post_id );

	wp_set_post_lock( $post_id );

	return $post_id;
}

/**
 * Calls wp_write_post() and handles the errors.
 *
 * @since 2.0.0
 *
 * @return int|void Post ID on success, void on failure.
 */
function write_post() {
	$result = wp_write_post();
	if ( is_wp_error( $result ) ) {
		wp_die( $result-&gt;get_error_message() );
	} else {
		return $result;
	}
}

//
// Post Meta.
//

/**
 * Adds post meta data defined in the `$_POST` superglobal for a post with given ID.
 *
 * @since 1.2.0
 *
 * @param int $post_id
 * @return int|bool
 */
function add_meta( $post_id ) {
	$post_id = (int) $post_id;

	$metakeyselect = isset( $_POST[&#039;metakeyselect&#039;] ) ? wp_unslash( trim( $_POST[&#039;metakeyselect&#039;] ) ) : &#039;&#039;;
	$metakeyinput  = isset( $_POST[&#039;metakeyinput&#039;] ) ? wp_unslash( trim( $_POST[&#039;metakeyinput&#039;] ) ) : &#039;&#039;;
	$metavalue     = isset( $_POST[&#039;metavalue&#039;] ) ? $_POST[&#039;metavalue&#039;] : &#039;&#039;;
	if ( is_string( $metavalue ) ) {
		$metavalue = trim( $metavalue );
	}

	if ( ( ( &#039;#NONE#&#039; !== $metakeyselect ) &amp;&amp; ! empty( $metakeyselect ) ) || ! empty( $metakeyinput ) ) {
		/*
		 * We have a key/value pair. If both the select and the input
		 * for the key have data, the input takes precedence.
		 */
		if ( &#039;#NONE#&#039; !== $metakeyselect ) {
			$metakey = $metakeyselect;
		}

		if ( $metakeyinput ) {
			$metakey = $metakeyinput; // Default.
		}

		if ( is_protected_meta( $metakey, &#039;post&#039; ) || ! current_user_can( &#039;add_post_meta&#039;, $post_id, $metakey ) ) {
			return false;
		}

		$metakey = wp_slash( $metakey );

		return add_post_meta( $post_id, $metakey, $metavalue );
	}

	return false;
}

/**
 * Deletes post meta data by meta ID.
 *
 * @since 1.2.0
 *
 * @param int $mid
 * @return bool
 */
function delete_meta( $mid ) {
	return delete_metadata_by_mid( &#039;post&#039;, $mid );
}

/**
 * Returns a list of previously defined keys.
 *
 * @since 1.2.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @return string[] Array of meta key names.
 */
function get_meta_keys() {
	global $wpdb;

	$keys = $wpdb-&gt;get_col(
		&quot;SELECT meta_key
		FROM $wpdb-&gt;postmeta
		GROUP BY meta_key
		ORDER BY meta_key&quot;
	);

	return $keys;
}

/**
 * Returns post meta data by meta ID.
 *
 * @since 2.1.0
 *
 * @param int $mid
 * @return object|bool
 */
function get_post_meta_by_id( $mid ) {
	return get_metadata_by_mid( &#039;post&#039;, $mid );
}

/**
 * Returns meta data for the given post ID.
 *
 * @since 1.2.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param int $post_id A post ID.
 * @return array[] {
 *     Array of meta data arrays for the given post ID.
 *
 *     @type array ...$0 {
 *         Associative array of meta data.
 *
 *         @type string $meta_key   Meta key.
 *         @type mixed  $meta_value Meta value.
 *         @type string $meta_id    Meta ID as a numeric string.
 *         @type string $post_id    Post ID as a numeric string.
 *     }
 * }
 */
function has_meta( $post_id ) {
	global $wpdb;

	return $wpdb-&gt;get_results(
		$wpdb-&gt;prepare(
			&quot;SELECT meta_key, meta_value, meta_id, post_id
			FROM $wpdb-&gt;postmeta WHERE post_id = %d
			ORDER BY meta_key,meta_id&quot;,
			$post_id
		),
		ARRAY_A
	);
}

/**
 * Updates post meta data by meta ID.
 *
 * @since 1.2.0
 *
 * @param int    $meta_id    Meta ID.
 * @param string $meta_key   Meta key. Expect slashed.
 * @param string $meta_value Meta value. Expect slashed.
 * @return bool
 */
function update_meta( $meta_id, $meta_key, $meta_value ) {
	$meta_key   = wp_unslash( $meta_key );
	$meta_value = wp_unslash( $meta_value );

	return update_metadata_by_mid( &#039;post&#039;, $meta_id, $meta_value, $meta_key );
}

//
// Private.
//

/**
 * Replaces hrefs of attachment anchors with up-to-date permalinks.
 *
 * @since 2.3.0
 * @access private
 *
 * @param int|WP_Post $post Post ID or post object.
 * @return void|int|WP_Error Void if nothing fixed. 0 or WP_Error on update failure. The post ID on update success.
 */
function _fix_attachment_links( $post ) {
	$post    = get_post( $post, ARRAY_A );
	$content = $post[&#039;post_content&#039;];

	// Don&#039;t run if no pretty permalinks or post is not published, scheduled, or privately published.
	if ( ! get_option( &#039;permalink_structure&#039; ) || ! in_array( $post[&#039;post_status&#039;], array( &#039;publish&#039;, &#039;future&#039;, &#039;private&#039; ), true ) ) {
		return;
	}

	// Short if there aren&#039;t any links or no &#039;?attachment_id=&#039; strings (strpos cannot be zero).
	if ( ! strpos( $content, &#039;?attachment_id=&#039; ) || ! preg_match_all( &#039;/&lt;a ([^&gt;]+)&gt;[\s\S]+?&lt;\/a&gt;/&#039;, $content, $link_matches ) ) {
		return;
	}

	$site_url = get_bloginfo( &#039;url&#039; );
	$site_url = substr( $site_url, (int) strpos( $site_url, &#039;://&#039; ) ); // Remove the http(s).
	$replace  = &#039;&#039;;

	foreach ( $link_matches[1] as $key =&gt; $value ) {
		if ( ! strpos( $value, &#039;?attachment_id=&#039; ) || ! strpos( $value, &#039;wp-att-&#039; )
			|| ! preg_match( &#039;/href=([&quot;\&#039;])[^&quot;\&#039;]*\?attachment_id=(\d+)[^&quot;\&#039;]*\\1/&#039;, $value, $url_match )
			|| ! preg_match( &#039;/rel=[&quot;\&#039;][^&quot;\&#039;]*wp-att-(\d+)/&#039;, $value, $rel_match ) ) {
				continue;
		}

		$quote  = $url_match[1]; // The quote (single or double).
		$url_id = (int) $url_match[2];
		$rel_id = (int) $rel_match[1];

		if ( ! $url_id || ! $rel_id || $url_id !== $rel_id || ! str_contains( $url_match[0], $site_url ) ) {
			continue;
		}

		$link    = $link_matches[0][ $key ];
		$replace = str_replace( $url_match[0], &#039;href=&#039; . $quote . get_attachment_link( $url_id ) . $quote, $link );

		$content = str_replace( $link, $replace, $content );
	}

	if ( $replace ) {
		$post[&#039;post_content&#039;] = $content;
		// Escape data pulled from DB.
		$post = add_magic_quotes( $post );

		return wp_update_post( $post );
	}
}

/**
 * Returns all the possible statuses for a post type.
 *
 * @since 2.5.0
 *
 * @param string $type The post_type you want the statuses for. Default &#039;post&#039;.
 * @return string[] An array of all the statuses for the supplied post type.
 */
function get_available_post_statuses( $type = &#039;post&#039; ) {
	$statuses = wp_count_posts( $type );

	return array_keys( get_object_vars( $statuses ) );
}

/**
 * Runs the query to fetch the posts for listing on the edit posts page.
 *
 * @since 2.5.0
 *
 * @param array|false $q Optional. Array of query variables to use to build the query.
 *                       Defaults to the `$_GET` superglobal.
 * @return string[] An array of all the statuses for the queried post type.
 */
function wp_edit_posts_query( $q = false ) {
	if ( false === $q ) {
		$q = $_GET;
	}

	$q[&#039;m&#039;]   = isset( $q[&#039;m&#039;] ) ? (int) $q[&#039;m&#039;] : 0;
	$q[&#039;cat&#039;] = isset( $q[&#039;cat&#039;] ) ? (int) $q[&#039;cat&#039;] : 0;

	$post_statuses = get_post_stati();

	if ( isset( $q[&#039;post_type&#039;] ) &amp;&amp; in_array( $q[&#039;post_type&#039;], get_post_types(), true ) ) {
		$post_type = $q[&#039;post_type&#039;];
	} else {
		$post_type = &#039;post&#039;;
	}

	$avail_post_stati = get_available_post_statuses( $post_type );
	$post_status      = &#039;&#039;;
	$perm             = &#039;&#039;;

	if ( isset( $q[&#039;post_status&#039;] ) &amp;&amp; in_array( $q[&#039;post_status&#039;], $post_statuses, true ) ) {
		$post_status = $q[&#039;post_status&#039;];
		$perm        = &#039;readable&#039;;
	}

	$orderby = &#039;&#039;;

	if ( isset( $q[&#039;orderby&#039;] ) ) {
		$orderby = $q[&#039;orderby&#039;];
	} elseif ( isset( $q[&#039;post_status&#039;] ) &amp;&amp; in_array( $q[&#039;post_status&#039;], array( &#039;pending&#039;, &#039;draft&#039; ), true ) ) {
		$orderby = &#039;modified&#039;;
	}

	$order = &#039;&#039;;

	if ( isset( $q[&#039;order&#039;] ) ) {
		$order = $q[&#039;order&#039;];
	} elseif ( isset( $q[&#039;post_status&#039;] ) &amp;&amp; &#039;pending&#039; === $q[&#039;post_status&#039;] ) {
		$order = &#039;ASC&#039;;
	}

	$per_page       = &quot;edit_{$post_type}_per_page&quot;;
	$posts_per_page = (int) get_user_option( $per_page );
	if ( empty( $posts_per_page ) || $posts_per_page &lt; 1 ) {
		$posts_per_page = 20;
	}

	/**
	 * Filters the number of items per page to show for a specific &#039;per_page&#039; type.
	 *
	 * The dynamic portion of the hook name, `$post_type`, refers to the post type.
	 *
	 * Possible hook names include:
	 *
	 *  - `edit_post_per_page`
	 *  - `edit_page_per_page`
	 *  - `edit_attachment_per_page`
	 *
	 * @since 3.0.0
	 *
	 * @param int $posts_per_page Number of posts to display per page for the given post
	 *                            type. Default 20.
	 */
	$posts_per_page = apply_filters( &quot;edit_{$post_type}_per_page&quot;, $posts_per_page );

	/**
	 * Filters the number of posts displayed per page when specifically listing &quot;posts&quot;.
	 *
	 * @since 2.8.0
	 *
	 * @param int    $posts_per_page Number of posts to be displayed. Default 20.
	 * @param string $post_type      The post type.
	 */
	$posts_per_page = apply_filters( &#039;edit_posts_per_page&#039;, $posts_per_page, $post_type );

	$query = compact( &#039;post_type&#039;, &#039;post_status&#039;, &#039;perm&#039;, &#039;order&#039;, &#039;orderby&#039;, &#039;posts_per_page&#039; );

	// Hierarchical types require special args.
	if ( is_post_type_hierarchical( $post_type ) &amp;&amp; empty( $orderby ) ) {
		$query[&#039;orderby&#039;]                = &#039;menu_order title&#039;;
		$query[&#039;order&#039;]                  = &#039;asc&#039;;
		$query[&#039;posts_per_page&#039;]         = -1;
		$query[&#039;posts_per_archive_page&#039;] = -1;
		$query[&#039;fields&#039;]                 = &#039;id=&gt;parent&#039;;
	}

	if ( ! empty( $q[&#039;show_sticky&#039;] ) ) {
		$query[&#039;post__in&#039;] = (array) get_option( &#039;sticky_posts&#039; );
	}

	wp( $query );

	return $avail_post_stati;
}

/**
 * Returns the query variables for the current attachments request.
 *
 * @since 4.2.0
 *
 * @param array|false $q Optional. Array of query variables to use to build the query.
 *                       Defaults to the `$_GET` superglobal.
 * @return array The parsed query vars.
 */
function wp_edit_attachments_query_vars( $q = false ) {
	if ( false === $q ) {
		$q = $_GET;
	}
	$q[&#039;m&#039;]         = isset( $q[&#039;m&#039;] ) ? (int) $q[&#039;m&#039;] : 0;
	$q[&#039;cat&#039;]       = isset( $q[&#039;cat&#039;] ) ? (int) $q[&#039;cat&#039;] : 0;
	$q[&#039;post_type&#039;] = &#039;attachment&#039;;
	$post_type      = get_post_type_object( &#039;attachment&#039; );
	$states         = &#039;inherit&#039;;
	if ( current_user_can( $post_type-&gt;cap-&gt;read_private_posts ) ) {
		$states .= &#039;,private&#039;;
	}

	$q[&#039;post_status&#039;] = isset( $q[&#039;status&#039;] ) &amp;&amp; &#039;trash&#039; === $q[&#039;status&#039;] ? &#039;trash&#039; : $states;
	$q[&#039;post_status&#039;] = isset( $q[&#039;attachment-filter&#039;] ) &amp;&amp; &#039;trash&#039; === $q[&#039;attachment-filter&#039;] ? &#039;trash&#039; : $states;

	$media_per_page = (int) get_user_option( &#039;upload_per_page&#039; );
	if ( empty( $media_per_page ) || $media_per_page &lt; 1 ) {
		$media_per_page = 20;
	}

	/**
	 * Filters the number of items to list per page when listing media items.
	 *
	 * @since 2.9.0
	 *
	 * @param int $media_per_page Number of media to list. Default 20.
	 */
	$q[&#039;posts_per_page&#039;] = apply_filters( &#039;upload_per_page&#039;, $media_per_page );

	$post_mime_types = get_post_mime_types();
	if ( isset( $q[&#039;post_mime_type&#039;] ) &amp;&amp; ! array_intersect( (array) $q[&#039;post_mime_type&#039;], array_keys( $post_mime_types ) ) ) {
		unset( $q[&#039;post_mime_type&#039;] );
	}

	foreach ( array_keys( $post_mime_types ) as $type ) {
		if ( isset( $q[&#039;attachment-filter&#039;] ) &amp;&amp; &quot;post_mime_type:$type&quot; === $q[&#039;attachment-filter&#039;] ) {
			$q[&#039;post_mime_type&#039;] = $type;
			break;
		}
	}

	if ( isset( $q[&#039;detached&#039;] ) || ( isset( $q[&#039;attachment-filter&#039;] ) &amp;&amp; &#039;detached&#039; === $q[&#039;attachment-filter&#039;] ) ) {
		$q[&#039;post_parent&#039;] = 0;
	}

	if ( isset( $q[&#039;mine&#039;] ) || ( isset( $q[&#039;attachment-filter&#039;] ) &amp;&amp; &#039;mine&#039; === $q[&#039;attachment-filter&#039;] ) ) {
		$q[&#039;author&#039;] = get_current_user_id();
	}

	// Filter query clauses to include filenames.
	if ( isset( $q[&#039;s&#039;] ) ) {
		add_filter( &#039;wp_allow_query_attachment_by_filename&#039;, &#039;__return_true&#039; );
	}

	return $q;
}

/**
 * Executes a query for attachments. An array of WP_Query arguments
 * can be passed in, which will override the arguments set by this function.
 *
 * @since 2.5.0
 *
 * @param array|false $q Optional. Array of query variables to use to build the query.
 *                       Defaults to the `$_GET` superglobal.
 * @return array {
 *     Array containing the post mime types and available post mime types.
 *
 *     @type array[]  $post_mime_types       Post mime types.
 *     @type string[] $avail_post_mime_types Available post mime types.
 * }
 */
function wp_edit_attachments_query( $q = false ) {
	wp( wp_edit_attachments_query_vars( $q ) );

	$post_mime_types       = get_post_mime_types();
	$avail_post_mime_types = get_available_post_mime_types( &#039;attachment&#039; );

	return array( $post_mime_types, $avail_post_mime_types );
}

/**
 * Returns the list of classes to be used by a meta box.
 *
 * @since 2.5.0
 *
 * @param string $box_id    Meta box ID (used in the &#039;id&#039; attribute for the meta box).
 * @param string $screen_id The screen on which the meta box is shown.
 * @return string Space-separated string of class names.
 */
function postbox_classes( $box_id, $screen_id ) {
	if ( isset( $_GET[&#039;edit&#039;] ) &amp;&amp; $_GET[&#039;edit&#039;] === $box_id ) {
		$classes = array( &#039;&#039; );
	} elseif ( get_user_option( &#039;closedpostboxes_&#039; . $screen_id ) ) {
		$closed = get_user_option( &#039;closedpostboxes_&#039; . $screen_id );
		if ( ! is_array( $closed ) ) {
			$classes = array( &#039;&#039; );
		} else {
			$classes = in_array( $box_id, $closed, true ) ? array( &#039;closed&#039; ) : array( &#039;&#039; );
		}
	} else {
		$classes = array( &#039;&#039; );
	}

	/**
	 * Filters the postbox classes for a specific screen and box ID combo.
	 *
	 * The dynamic portions of the hook name, `$screen_id` and `$box_id`, refer to
	 * the screen ID and meta box ID, respectively.
	 *
	 * @since 3.2.0
	 *
	 * @param string[] $classes An array of postbox classes.
	 */
	$classes = apply_filters( &quot;postbox_classes_{$screen_id}_{$box_id}&quot;, $classes );

	return implode( &#039; &#039;, $classes );
}

/**
 * Returns a sample permalink based on the post name.
 *
 * @since 2.5.0
 *
 * @param int|WP_Post $post  Post ID or post object.
 * @param string|null $title Optional. Title to override the post&#039;s current title
 *                           when generating the post name. Default null.
 * @param string|null $name  Optional. Name to override the post name. Default null.
 * @return array {
 *     Array containing the sample permalink with placeholder for the post name, and the post name.
 *
 *     @type string $0 The permalink with placeholder for the post name.
 *     @type string $1 The post name.
 * }
 */
function get_sample_permalink( $post, $title = null, $name = null ) {
	$post = get_post( $post );

	if ( ! $post ) {
		return array( &#039;&#039;, &#039;&#039; );
	}

	$ptype = get_post_type_object( $post-&gt;post_type );

	$original_status = $post-&gt;post_status;
	$original_date   = $post-&gt;post_date;
	$original_name   = $post-&gt;post_name;
	$original_filter = $post-&gt;filter;

	// Hack: get_permalink() would return plain permalink for drafts, so we will fake that our post is published.
	if ( in_array( $post-&gt;post_status, array( &#039;auto-draft&#039;, &#039;draft&#039;, &#039;pending&#039;, &#039;future&#039; ), true ) ) {
		$post-&gt;post_status = &#039;publish&#039;;
		$post-&gt;post_name   = sanitize_title( $post-&gt;post_name ? $post-&gt;post_name : $post-&gt;post_title, $post-&gt;ID );
	}

	/*
	 * If the user wants to set a new name -- override the current one.
	 * Note: if empty name is supplied -- use the title instead, see #6072.
	 */
	if ( ! is_null( $name ) ) {
		$post-&gt;post_name = sanitize_title( $name ? $name : $title, $post-&gt;ID );
	}

	$post-&gt;post_name = wp_unique_post_slug( $post-&gt;post_name, $post-&gt;ID, $post-&gt;post_status, $post-&gt;post_type, $post-&gt;post_parent );

	$post-&gt;filter = &#039;sample&#039;;

	$permalink = get_permalink( $post, true );

	// Replace custom post_type token with generic pagename token for ease of use.
	$permalink = str_replace( &quot;%$post-&gt;post_type%&quot;, &#039;%pagename%&#039;, $permalink );

	// Handle page hierarchy.
	if ( $ptype-&gt;hierarchical ) {
		$uri = get_page_uri( $post );
		if ( $uri ) {
			$uri = untrailingslashit( $uri );
			$uri = strrev( stristr( strrev( $uri ), &#039;/&#039; ) );
			$uri = untrailingslashit( $uri );
		}

		/** This filter is documented in wp-admin/edit-tag-form.php */
		$uri = apply_filters( &#039;editable_slug&#039;, $uri, $post );
		if ( ! empty( $uri ) ) {
			$uri .= &#039;/&#039;;
		}
		$permalink = str_replace( &#039;%pagename%&#039;, &quot;{$uri}%pagename%&quot;, $permalink );
	}

	/** This filter is documented in wp-admin/edit-tag-form.php */
	$permalink         = array( $permalink, apply_filters( &#039;editable_slug&#039;, $post-&gt;post_name, $post ) );
	$post-&gt;post_status = $original_status;
	$post-&gt;post_date   = $original_date;
	$post-&gt;post_name   = $original_name;
	$post-&gt;filter      = $original_filter;

	/**
	 * Filters the sample permalink.
	 *
	 * @since 4.4.0
	 *
	 * @param array   $permalink {
	 *     Array containing the sample permalink with placeholder for the post name, and the post name.
	 *
	 *     @type string $0 The permalink with placeholder for the post name.
	 *     @type string $1 The post name.
	 * }
	 * @param int     $post_id Post ID.
	 * @param string  $title   Post title.
	 * @param string  $name    Post name (slug).
	 * @param WP_Post $post    Post object.
	 */
	return apply_filters( &#039;get_sample_permalink&#039;, $permalink, $post-&gt;ID, $title, $name, $post );
}

/**
 * Returns the HTML of the sample permalink slug editor.
 *
 * @since 2.5.0
 *
 * @param int|WP_Post $post      Post ID or post object.
 * @param string|null $new_title Optional. New title. Default null.
 * @param string|null $new_slug  Optional. New slug. Default null.
 * @return string The HTML of the sample permalink slug editor.
 */
function get_sample_permalink_html( $post, $new_title = null, $new_slug = null ) {
	$post = get_post( $post );

	if ( ! $post ) {
		return &#039;&#039;;
	}

	list($permalink, $post_name) = get_sample_permalink( $post-&gt;ID, $new_title, $new_slug );

	$view_link      = false;
	$preview_target = &#039;&#039;;

	if ( current_user_can( &#039;read_post&#039;, $post-&gt;ID ) ) {
		if ( &#039;draft&#039; === $post-&gt;post_status || empty( $post-&gt;post_name ) ) {
			$view_link      = get_preview_post_link( $post );
			$preview_target = &quot; target=&#039;wp-preview-{$post-&gt;ID}&#039;&quot;;
		} else {
			if ( &#039;publish&#039; === $post-&gt;post_status || &#039;attachment&#039; === $post-&gt;post_type ) {
				$view_link = get_permalink( $post );
			} else {
				// Allow non-published (private, future) to be viewed at a pretty permalink, in case $post-&gt;post_name is set.
				$view_link = str_replace( array( &#039;%pagename%&#039;, &#039;%postname%&#039; ), $post-&gt;post_name, $permalink );
			}
		}
	}

	// Permalinks without a post/page name placeholder don&#039;t have anything to edit.
	if ( ! str_contains( $permalink, &#039;%postname%&#039; ) &amp;&amp; ! str_contains( $permalink, &#039;%pagename%&#039; ) ) {
		$return = &#039;&lt;strong&gt;&#039; . __( &#039;Permalink:&#039; ) . &quot;&lt;/strong&gt;\n&quot;;

		if ( false !== $view_link ) {
			$display_link = urldecode( $view_link );
			$return      .= &#039;&lt;a id=&quot;sample-permalink&quot; href=&quot;&#039; . esc_url( $view_link ) . &#039;&quot;&#039; . $preview_target . &#039;&gt;&#039; . esc_html( $display_link ) . &quot;&lt;/a&gt;\n&quot;;
		} else {
			$return .= &#039;&lt;span id=&quot;sample-permalink&quot;&gt;&#039; . $permalink . &quot;&lt;/span&gt;\n&quot;;
		}

		// Encourage a pretty permalink setting.
		if ( ! get_option( &#039;permalink_structure&#039; ) &amp;&amp; current_user_can( &#039;manage_options&#039; )
			&amp;&amp; ! ( &#039;page&#039; === get_option( &#039;show_on_front&#039; ) &amp;&amp; (int) get_option( &#039;page_on_front&#039; ) === $post-&gt;ID )
		) {
			$return .= &#039;&lt;span id=&quot;change-permalinks&quot;&gt;&lt;a href=&quot;options-permalink.php&quot; class=&quot;button button-small&quot;&gt;&#039; . __( &#039;Change Permalink Structure&#039; ) . &quot;&lt;/a&gt;&lt;/span&gt;\n&quot;;
		}
	} else {
		if ( mb_strlen( $post_name ) &gt; 34 ) {
			$post_name_abridged = mb_substr( $post_name, 0, 16 ) . &#039;&amp;hellip;&#039; . mb_substr( $post_name, -16 );
		} else {
			$post_name_abridged = $post_name;
		}

		$post_name_html = &#039;&lt;span id=&quot;editable-post-name&quot;&gt;&#039; . esc_html( $post_name_abridged ) . &#039;&lt;/span&gt;&#039;;
		$display_link   = str_replace( array( &#039;%pagename%&#039;, &#039;%postname%&#039; ), $post_name_html, esc_html( urldecode( $permalink ) ) );

		$return  = &#039;&lt;strong&gt;&#039; . __( &#039;Permalink:&#039; ) . &quot;&lt;/strong&gt;\n&quot;;
		$return .= &#039;&lt;span id=&quot;sample-permalink&quot;&gt;&lt;a href=&quot;&#039; . esc_url( $view_link ) . &#039;&quot;&#039; . $preview_target . &#039;&gt;&#039; . $display_link . &quot;&lt;/a&gt;&lt;/span&gt;\n&quot;;
		$return .= &#039;&amp;lrm;&#039;; // Fix bi-directional text display defect in RTL languages.
		$return .= &#039;&lt;span id=&quot;edit-slug-buttons&quot;&gt;&lt;button type=&quot;button&quot; class=&quot;edit-slug button button-small hide-if-no-js&quot; aria-label=&quot;&#039; . __( &#039;Edit permalink&#039; ) . &#039;&quot;&gt;&#039; . __( &#039;Edit&#039; ) . &quot;&lt;/button&gt;&lt;/span&gt;\n&quot;;
		$return .= &#039;&lt;span id=&quot;editable-post-name-full&quot;&gt;&#039; . esc_html( $post_name ) . &quot;&lt;/span&gt;\n&quot;;
	}

	/**
	 * Filters the sample permalink HTML markup.
	 *
	 * @since 2.9.0
	 * @since 4.4.0 Added `$post` parameter.
	 *
	 * @param string      $return    Sample permalink HTML markup.
	 * @param int         $post_id   Post ID.
	 * @param string|null $new_title New sample permalink title.
	 * @param string|null $new_slug  New sample permalink slug.
	 * @param WP_Post     $post      Post object.
	 */
	$return = apply_filters( &#039;get_sample_permalink_html&#039;, $return, $post-&gt;ID, $new_title, $new_slug, $post );

	return $return;
}

/**
 * Returns HTML for the post thumbnail meta box.
 *
 * @since 2.9.0
 *
 * @param int|null         $thumbnail_id Optional. Thumbnail attachment ID. Default null.
 * @param int|WP_Post|null $post         Optional. The post ID or object associated
 *                                       with the thumbnail. Defaults to global $post.
 * @return string The post thumbnail HTML.
 */
function _wp_post_thumbnail_html( $thumbnail_id = null, $post = null ) {
	$_wp_additional_image_sizes = wp_get_additional_image_sizes();

	$post               = get_post( $post );
	$post_type_object   = get_post_type_object( $post-&gt;post_type );
	$set_thumbnail_link = &#039;&lt;p class=&quot;hide-if-no-js&quot;&gt;&lt;a href=&quot;%s&quot; id=&quot;set-post-thumbnail&quot;%s class=&quot;thickbox&quot;&gt;%s&lt;/a&gt;&lt;/p&gt;&#039;;
	$upload_iframe_src  = get_upload_iframe_src( &#039;image&#039;, $post-&gt;ID );

	$content = sprintf(
		$set_thumbnail_link,
		esc_url( $upload_iframe_src ),
		&#039;&#039;, // Empty when there&#039;s no featured image set, `aria-describedby` attribute otherwise.
		esc_html( $post_type_object-&gt;labels-&gt;set_featured_image )
	);

	if ( $thumbnail_id &amp;&amp; get_post( $thumbnail_id ) ) {
		$size = isset( $_wp_additional_image_sizes[&#039;post-thumbnail&#039;] ) ? &#039;post-thumbnail&#039; : array( 266, 266 );

		/**
		 * Filters the size used to display the post thumbnail image in the &#039;Featured image&#039; meta box.
		 *
		 * Note: When a theme adds &#039;post-thumbnail&#039; support, a special &#039;post-thumbnail&#039;
		 * image size is registered, which differs from the &#039;thumbnail&#039; image size
		 * managed via the Settings &gt; Media screen.
		 *
		 * @since 4.4.0
		 *
		 * @param string|int[] $size         Requested image size. Can be any registered image size name, or
		 *                                   an array of width and height values in pixels (in that order).
		 * @param int          $thumbnail_id Post thumbnail attachment ID.
		 * @param WP_Post      $post         The post object associated with the thumbnail.
		 */
		$size = apply_filters( &#039;admin_post_thumbnail_size&#039;, $size, $thumbnail_id, $post );

		$thumbnail_html = wp_get_attachment_image( $thumbnail_id, $size );

		if ( ! empty( $thumbnail_html ) ) {
			$content  = sprintf(
				$set_thumbnail_link,
				esc_url( $upload_iframe_src ),
				&#039; aria-describedby=&quot;set-post-thumbnail-desc&quot;&#039;,
				$thumbnail_html
			);
			$content .= &#039;&lt;p class=&quot;hide-if-no-js howto&quot; id=&quot;set-post-thumbnail-desc&quot;&gt;&#039; . __( &#039;Click the image to edit or update&#039; ) . &#039;&lt;/p&gt;&#039;;
			$content .= &#039;&lt;p class=&quot;hide-if-no-js&quot;&gt;&lt;a href=&quot;#&quot; id=&quot;remove-post-thumbnail&quot;&gt;&#039; . esc_html( $post_type_object-&gt;labels-&gt;remove_featured_image ) . &#039;&lt;/a&gt;&lt;/p&gt;&#039;;
		}
	}

	$content .= &#039;&lt;input type=&quot;hidden&quot; id=&quot;_thumbnail_id&quot; name=&quot;_thumbnail_id&quot; value=&quot;&#039; . esc_attr( $thumbnail_id ? $thumbnail_id : &#039;-1&#039; ) . &#039;&quot; /&gt;&#039;;

	/**
	 * Filters the admin post thumbnail HTML markup to return.
	 *
	 * @since 2.9.0
	 * @since 3.5.0 Added the `$post_id` parameter.
	 * @since 4.6.0 Added the `$thumbnail_id` parameter.
	 *
	 * @param string   $content      Admin post thumbnail HTML markup.
	 * @param int      $post_id      Post ID.
	 * @param int|null $thumbnail_id Thumbnail attachment ID, or null if there isn&#039;t one.
	 */
	return apply_filters( &#039;admin_post_thumbnail_html&#039;, $content, $post-&gt;ID, $thumbnail_id );
}

/**
 * Determines whether the post is currently being edited by another user.
 *
 * @since 2.5.0
 *
 * @param int|WP_Post $post ID or object of the post to check for editing.
 * @return int|false ID of the user with lock. False if the post does not exist, post is not locked,
 *                   the user with lock does not exist, or the post is locked by current user.
 */
function wp_check_post_lock( $post ) {
	$post = get_post( $post );

	if ( ! $post ) {
		return false;
	}

	$lock = get_post_meta( $post-&gt;ID, &#039;_edit_lock&#039;, true );

	if ( ! $lock ) {
		return false;
	}

	$lock = explode( &#039;:&#039;, $lock );
	$time = $lock[0];
	$user = isset( $lock[1] ) ? (int) $lock[1] : (int) get_post_meta( $post-&gt;ID, &#039;_edit_last&#039;, true );

	if ( ! get_userdata( $user ) ) {
		return false;
	}

	/** This filter is documented in wp-admin/includes/ajax-actions.php */
	$time_window = apply_filters( &#039;wp_check_post_lock_window&#039;, 150 );

	if ( $time &amp;&amp; $time &gt; time() - $time_window &amp;&amp; get_current_user_id() !== $user ) {
		return $user;
	}

	return false;
}

/**
 * Marks the post as currently being edited by the current user.
 *
 * @since 2.5.0
 *
 * @param int|WP_Post $post ID or object of the post being edited.
 * @return array|false {
 *     Array of the lock time and user ID. False if the post does not exist, or there
 *     is no current user.
 *
 *     @type int $0 The current time as a Unix timestamp.
 *     @type int $1 The ID of the current user.
 * }
 */
function wp_set_post_lock( $post ) {
	$post = get_post( $post );

	if ( ! $post ) {
		return false;
	}

	$user_id = get_current_user_id();

	if ( 0 === $user_id ) {
		return false;
	}

	$now  = time();
	$lock = &quot;$now:$user_id&quot;;

	update_post_meta( $post-&gt;ID, &#039;_edit_lock&#039;, $lock );

	return array( $now, $user_id );
}

/**
 * Outputs the HTML for the notice to say that someone else is editing or has taken over editing of this post.
 *
 * @since 2.8.5
 */
function _admin_notice_post_locked() {
	$post = get_post();

	if ( ! $post ) {
		return;
	}

	$user    = null;
	$user_id = wp_check_post_lock( $post-&gt;ID );

	if ( $user_id ) {
		$user = get_userdata( $user_id );
	}

	if ( $user ) {
		/**
		 * Filters whether to show the post locked dialog.
		 *
		 * Returning false from the filter will prevent the dialog from being displayed.
		 *
		 * @since 3.6.0
		 *
		 * @param bool    $display Whether to display the dialog. Default true.
		 * @param WP_Post $post    Post object.
		 * @param WP_User $user    The user with the lock for the post.
		 */
		if ( ! apply_filters( &#039;show_post_locked_dialog&#039;, true, $post, $user ) ) {
			return;
		}

		$locked = true;
	} else {
		$locked = false;
	}

	$sendback      = wp_get_referer();
	$sendback_text = __( &#039;Go back&#039; );

	if ( ! $locked || ! $sendback || str_contains( $sendback, &#039;post.php&#039; ) || str_contains( $sendback, &#039;post-new.php&#039; ) ) {
		$sendback = admin_url( &#039;edit.php&#039; );

		if ( &#039;post&#039; !== $post-&gt;post_type ) {
			$sendback = add_query_arg( &#039;post_type&#039;, $post-&gt;post_type, $sendback );
		}

		$post_type_object = get_post_type_object( $post-&gt;post_type );

		if ( $post_type_object ) {
			$sendback_text = $post_type_object-&gt;labels-&gt;all_items;
		}
	}

	$hidden = $locked ? &#039;&#039; : &#039; hidden&#039;;

	?&gt;
	&lt;div id=&quot;post-lock-dialog&quot; class=&quot;notification-dialog-wrap&lt;?php echo $hidden; ?&gt;&quot;&gt;
	&lt;div class=&quot;notification-dialog-background&quot;&gt;&lt;/div&gt;
	&lt;div class=&quot;notification-dialog&quot;&gt;
	&lt;?php

	if ( $locked ) {
		$query_args = array();
		if ( get_post_type_object( $post-&gt;post_type )-&gt;public ) {
			if ( &#039;publish&#039; === $post-&gt;post_status || $user-&gt;ID !== (int) $post-&gt;post_author ) {
				// Latest content is in autosave.
				$nonce                       = wp_create_nonce( &#039;post_preview_&#039; . $post-&gt;ID );
				$query_args[&#039;preview_id&#039;]    = $post-&gt;ID;
				$query_args[&#039;preview_nonce&#039;] = $nonce;
			}
		}

		$preview_link = get_preview_post_link( $post-&gt;ID, $query_args );

		/**
		 * Filters whether to allow the post lock to be overridden.
		 *
		 * Returning false from the filter will disable the ability
		 * to override the post lock.
		 *
		 * @since 3.6.0
		 *
		 * @param bool    $override Whether to allow the post lock to be overridden. Default true.
		 * @param WP_Post $post     Post object.
		 * @param WP_User $user     The user with the lock for the post.
		 */
		$override = apply_filters( &#039;override_post_lock&#039;, true, $post, $user );
		$tab_last = $override ? &#039;&#039; : &#039; wp-tab-last&#039;;

		?&gt;
		&lt;div class=&quot;post-locked-message&quot;&gt;
		&lt;div class=&quot;post-locked-avatar&quot;&gt;&lt;?php echo get_avatar( $user-&gt;ID, 64 ); ?&gt;&lt;/div&gt;
		&lt;p class=&quot;currently-editing wp-tab-first&quot; tabindex=&quot;0&quot;&gt;
		&lt;?php
		if ( $override ) {
			/* translators: %s: User&#039;s display name. */
			printf( __( &#039;%s is currently editing this post. Do you want to take over?&#039; ), esc_html( $user-&gt;display_name ) );
		} else {
			/* translators: %s: User&#039;s display name. */
			printf( __( &#039;%s is currently editing this post.&#039; ), esc_html( $user-&gt;display_name ) );
		}
		?&gt;
		&lt;/p&gt;
		&lt;?php
		/**
		 * Fires inside the post locked dialog before the buttons are displayed.
		 *
		 * @since 3.6.0
		 * @since 5.4.0 The $user parameter was added.
		 *
		 * @param WP_Post $post Post object.
		 * @param WP_User $user The user with the lock for the post.
		 */
		do_action( &#039;post_locked_dialog&#039;, $post, $user );
		?&gt;
		&lt;p&gt;
		&lt;a class=&quot;button&quot; href=&quot;&lt;?php echo esc_url( $sendback ); ?&gt;&quot;&gt;&lt;?php echo $sendback_text; ?&gt;&lt;/a&gt;
		&lt;?php if ( $preview_link ) { ?&gt;
		&lt;a class=&quot;button&lt;?php echo $tab_last; ?&gt;&quot; href=&quot;&lt;?php echo esc_url( $preview_link ); ?&gt;&quot;&gt;&lt;?php _e( &#039;Preview&#039; ); ?&gt;&lt;/a&gt;
			&lt;?php
		}

		// Allow plugins to prevent some users overriding the post lock.
		if ( $override ) {
			?&gt;
	&lt;a class=&quot;button button-primary wp-tab-last&quot; href=&quot;&lt;?php echo esc_url( add_query_arg( &#039;get-post-lock&#039;, &#039;1&#039;, wp_nonce_url( get_edit_post_link( $post-&gt;ID, &#039;url&#039; ), &#039;lock-post_&#039; . $post-&gt;ID ) ) ); ?&gt;&quot;&gt;&lt;?php _e( &#039;Take over&#039; ); ?&gt;&lt;/a&gt;
			&lt;?php
		}

		?&gt;
		&lt;/p&gt;
		&lt;/div&gt;
		&lt;?php
	} else {
		?&gt;
		&lt;div class=&quot;post-taken-over&quot;&gt;
			&lt;div class=&quot;post-locked-avatar&quot;&gt;&lt;/div&gt;
			&lt;p class=&quot;wp-tab-first&quot; tabindex=&quot;0&quot;&gt;
			&lt;span class=&quot;currently-editing&quot;&gt;&lt;/span&gt;&lt;br /&gt;
			&lt;span class=&quot;locked-saving hidden&quot;&gt;&lt;img src=&quot;&lt;?php echo esc_url( admin_url( &#039;images/spinner-2x.gif&#039; ) ); ?&gt;&quot; width=&quot;16&quot; height=&quot;16&quot; alt=&quot;&quot; /&gt; &lt;?php _e( &#039;Saving revision&amp;hellip;&#039; ); ?&gt;&lt;/span&gt;
			&lt;span class=&quot;locked-saved hidden&quot;&gt;&lt;?php _e( &#039;Your latest changes were saved as a revision.&#039; ); ?&gt;&lt;/span&gt;
			&lt;/p&gt;
			&lt;?php
			/**
			 * Fires inside the dialog displayed when a user has lost the post lock.
			 *
			 * @since 3.6.0
			 *
			 * @param WP_Post $post Post object.
			 */
			do_action( &#039;post_lock_lost_dialog&#039;, $post );
			?&gt;
			&lt;p&gt;&lt;a class=&quot;button button-primary wp-tab-last&quot; href=&quot;&lt;?php echo esc_url( $sendback ); ?&gt;&quot;&gt;&lt;?php echo $sendback_text; ?&gt;&lt;/a&gt;&lt;/p&gt;
		&lt;/div&gt;
		&lt;?php
	}

	?&gt;
	&lt;/div&gt;
	&lt;/div&gt;
	&lt;?php
}

/**
 * Creates autosave data for the specified post from `$_POST` data.
 *
 * @since 2.6.0
 *
 * @param array|int $post_data Associative array containing the post data, or integer post ID.
 *                             If a numeric post ID is provided, will use the `$_POST` superglobal.
 * @return int|WP_Error The autosave revision ID. WP_Error or 0 on error.
 */
function wp_create_post_autosave( $post_data ) {
	if ( is_numeric( $post_data ) ) {
		$post_id   = $post_data;
		$post_data = $_POST;
	} else {
		$post_id = (int) $post_data[&#039;post_ID&#039;];
	}

	$post_data = _wp_translate_postdata( true, $post_data );
	if ( is_wp_error( $post_data ) ) {
		return $post_data;
	}
	$post_data = _wp_get_allowed_postdata( $post_data );

	$post_author = get_current_user_id();

	// Store one autosave per author. If there is already an autosave, overwrite it.
	$old_autosave = wp_get_post_autosave( $post_id, $post_author );
	if ( $old_autosave ) {
		$new_autosave                = _wp_post_revision_data( $post_data, true );
		$new_autosave[&#039;ID&#039;]          = $old_autosave-&gt;ID;
		$new_autosave[&#039;post_author&#039;] = $post_author;

		$post = get_post( $post_id );

		// If the new autosave has the same content as the post, delete the autosave.
		$autosave_is_different = false;
		foreach ( array_intersect( array_keys( $new_autosave ), array_keys( _wp_post_revision_fields( $post ) ) ) as $field ) {
			if ( normalize_whitespace( $new_autosave[ $field ] ) !== normalize_whitespace( $post-&gt;$field ) ) {
				$autosave_is_different = true;
				break;
			}
		}

		if ( ! $autosave_is_different ) {
			wp_delete_post_revision( $old_autosave-&gt;ID );
			return 0;
		}

		/**
		 * Fires before an autosave is stored.
		 *
		 * @since 4.1.0
		 * @since 6.4.0 The `$is_update` parameter was added to indicate if the autosave is being updated or was newly created.
		 *
		 * @param array $new_autosave Post array - the autosave that is about to be saved.
		 * @param bool  $is_update    Whether this is an existing autosave.
		 */
		do_action( &#039;wp_creating_autosave&#039;, $new_autosave, true );
		return wp_update_post( $new_autosave );
	}

	// _wp_put_post_revision() expects unescaped.
	$post_data = wp_unslash( $post_data );

	// Otherwise create the new autosave as a special post revision.
	$revision = _wp_put_post_revision( $post_data, true );

	if ( ! is_wp_error( $revision ) &amp;&amp; 0 !== $revision ) {

		/** This action is documented in wp-admin/includes/post.php */
		do_action( &#039;wp_creating_autosave&#039;, get_post( $revision, ARRAY_A ), false );
	}

	return $revision;
}

/**
 * Autosaves the revisioned meta fields.
 *
 * Iterates through the revisioned meta fields and checks each to see if they are set,
 * and have a changed value. If so, the meta value is saved and attached to the autosave.
 *
 * @since 6.4.0
 *
 * @param array $new_autosave The new post data being autosaved.
 */
function wp_autosave_post_revisioned_meta_fields( $new_autosave ) {
	/*
	 * The post data arrives as either $_POST[&#039;data&#039;][&#039;wp_autosave&#039;] or the $_POST
	 * itself. This sets $posted_data to the correct variable.
	 *
	 * Ignoring sanitization to avoid altering meta. Ignoring the nonce check because
	 * this is hooked on inner core hooks where a valid nonce was already checked.
	 */
	$posted_data = isset( $_POST[&#039;data&#039;][&#039;wp_autosave&#039;] ) ? $_POST[&#039;data&#039;][&#039;wp_autosave&#039;] : $_POST;

	$post_type = get_post_type( $new_autosave[&#039;post_parent&#039;] );

	/*
	 * Go through the revisioned meta keys and save them as part of the autosave,
	 * if the meta key is part of the posted data, the meta value is not blank,
	 * and the meta value has changes from the last autosaved value.
	 */
	foreach ( wp_post_revision_meta_keys( $post_type ) as $meta_key ) {

		if ( isset( $posted_data[ $meta_key ] )
			&amp;&amp; get_post_meta( $new_autosave[&#039;ID&#039;], $meta_key, true ) !== wp_unslash( $posted_data[ $meta_key ] )
		) {
			/*
			 * Use the underlying delete_metadata() and add_metadata() functions
			 * vs delete_post_meta() and add_post_meta() to make sure we&#039;re working
			 * with the actual revision meta.
			 */
			delete_metadata( &#039;post&#039;, $new_autosave[&#039;ID&#039;], $meta_key );

			// One last check to ensure meta value is not empty.
			if ( ! empty( $posted_data[ $meta_key ] ) ) {
				// Add the revisions meta data to the autosave.
				add_metadata( &#039;post&#039;, $new_autosave[&#039;ID&#039;], $meta_key, $posted_data[ $meta_key ] );
			}
		}
	}
}

/**
 * Saves a draft or manually autosaves for the purpose of showing a post preview.
 *
 * @since 2.7.0
 *
 * @return string URL to redirect to show the preview.
 */
function post_preview() {

	$post_id     = (int) $_POST[&#039;post_ID&#039;];
	$_POST[&#039;ID&#039;] = $post_id;

	$post = get_post( $post_id );

	if ( ! $post ) {
		wp_die( __( &#039;Sorry, you are not allowed to edit this post.&#039; ) );
	}

	if ( ! current_user_can( &#039;edit_post&#039;, $post-&gt;ID ) ) {
		wp_die( __( &#039;Sorry, you are not allowed to edit this post.&#039; ) );
	}

	$is_autosave = false;

	if ( ! wp_check_post_lock( $post-&gt;ID ) &amp;&amp; get_current_user_id() === (int) $post-&gt;post_author
		&amp;&amp; ( &#039;draft&#039; === $post-&gt;post_status || &#039;auto-draft&#039; === $post-&gt;post_status )
	) {
		$saved_post_id = edit_post();
	} else {
		$is_autosave = true;

		if ( isset( $_POST[&#039;post_status&#039;] ) &amp;&amp; &#039;auto-draft&#039; === $_POST[&#039;post_status&#039;] ) {
			$_POST[&#039;post_status&#039;] = &#039;draft&#039;;
		}

		$saved_post_id = wp_create_post_autosave( $post-&gt;ID );
	}

	if ( is_wp_error( $saved_post_id ) ) {
		wp_die( $saved_post_id-&gt;get_error_message() );
	}

	$query_args = array();

	if ( $is_autosave &amp;&amp; $saved_post_id ) {
		$query_args[&#039;preview_id&#039;]    = $post-&gt;ID;
		$query_args[&#039;preview_nonce&#039;] = wp_create_nonce( &#039;post_preview_&#039; . $post-&gt;ID );

		if ( isset( $_POST[&#039;post_format&#039;] ) ) {
			$query_args[&#039;post_format&#039;] = empty( $_POST[&#039;post_format&#039;] ) ? &#039;standard&#039; : sanitize_key( $_POST[&#039;post_format&#039;] );
		}

		if ( isset( $_POST[&#039;_thumbnail_id&#039;] ) ) {
			$query_args[&#039;_thumbnail_id&#039;] = ( (int) $_POST[&#039;_thumbnail_id&#039;] &lt;= 0 ) ? &#039;-1&#039; : (int) $_POST[&#039;_thumbnail_id&#039;];
		}
	}

	return get_preview_post_link( $post, $query_args );
}

/**
 * Saves a post submitted with XHR.
 *
 * Intended for use with heartbeat and autosave.js
 *
 * @since 3.9.0
 *
 * @param array $post_data Associative array of the submitted post data.
 * @return mixed The value 0 or WP_Error on failure. The saved post ID on success.
 *               The ID can be the draft post_id or the autosave revision post_id.
 */
function wp_autosave( $post_data ) {
	// Back-compat.
	if ( ! defined( &#039;DOING_AUTOSAVE&#039; ) ) {
		define( &#039;DOING_AUTOSAVE&#039;, true );
	}

	$post_id              = (int) $post_data[&#039;post_id&#039;];
	$post_data[&#039;ID&#039;]      = $post_id;
	$post_data[&#039;post_ID&#039;] = $post_id;

	if ( false === wp_verify_nonce( $post_data[&#039;_wpnonce&#039;], &#039;update-post_&#039; . $post_id ) ) {
		return new WP_Error( &#039;invalid_nonce&#039;, __( &#039;Error while saving.&#039; ) );
	}

	$post = get_post( $post_id );

	if ( ! current_user_can( &#039;edit_post&#039;, $post-&gt;ID ) ) {
		return new WP_Error( &#039;edit_posts&#039;, __( &#039;Sorry, you are not allowed to edit this item.&#039; ) );
	}

	if ( &#039;auto-draft&#039; === $post-&gt;post_status ) {
		$post_data[&#039;post_status&#039;] = &#039;draft&#039;;
	}

	if ( &#039;page&#039; !== $post_data[&#039;post_type&#039;] &amp;&amp; ! empty( $post_data[&#039;catslist&#039;] ) ) {
		$post_data[&#039;post_category&#039;] = explode( &#039;,&#039;, $post_data[&#039;catslist&#039;] );
	}

	if ( ! wp_check_post_lock( $post-&gt;ID ) &amp;&amp; get_current_user_id() === (int) $post-&gt;post_author
		&amp;&amp; ( &#039;auto-draft&#039; === $post-&gt;post_status || &#039;draft&#039; === $post-&gt;post_status )
	) {
		// Drafts and auto-drafts are just overwritten by autosave for the same user if the post is not locked.
		return edit_post( wp_slash( $post_data ) );
	} else {
		/*
		 * Non-drafts or other users&#039; drafts are not overwritten.
		 * The autosave is stored in a special post revision for each user.
		 */
		return wp_create_post_autosave( wp_slash( $post_data ) );
	}
}

/**
 * Redirects to previous page.
 *
 * @since 2.7.0
 *
 * @param int $post_id Optional. Post ID.
 */
function redirect_post( $post_id = 0 ) {
	if ( isset( $_POST[&#039;save&#039;] ) || isset( $_POST[&#039;publish&#039;] ) ) {
		$status = get_post_status( $post_id );

		switch ( $status ) {
			case &#039;pending&#039;:
				$message = 8;
				break;
			case &#039;future&#039;:
				$message = 9;
				break;
			case &#039;draft&#039;:
				$message = 10;
				break;
			default:
				$message = isset( $_POST[&#039;publish&#039;] ) ? 6 : 1;
				break;
		}

		$location = add_query_arg( &#039;message&#039;, $message, get_edit_post_link( $post_id, &#039;url&#039; ) );
	} elseif ( isset( $_POST[&#039;addmeta&#039;] ) &amp;&amp; $_POST[&#039;addmeta&#039;] ) {
		$location = add_query_arg( &#039;message&#039;, 2, wp_get_referer() );
		$location = explode( &#039;#&#039;, $location );
		$location = $location[0] . &#039;#postcustom&#039;;
	} elseif ( isset( $_POST[&#039;deletemeta&#039;] ) &amp;&amp; $_POST[&#039;deletemeta&#039;] ) {
		$location = add_query_arg( &#039;message&#039;, 3, wp_get_referer() );
		$location = explode( &#039;#&#039;, $location );
		$location = $location[0] . &#039;#postcustom&#039;;
	} else {
		$location = add_query_arg( &#039;message&#039;, 4, get_edit_post_link( $post_id, &#039;url&#039; ) );
	}

	/**
	 * Filters the post redirect destination URL.
	 *
	 * @since 2.9.0
	 *
	 * @param string $location The destination URL.
	 * @param int    $post_id  The post ID.
	 */
	wp_redirect( apply_filters( &#039;redirect_post_location&#039;, $location, $post_id ) );
	exit;
}

/**
 * Sanitizes POST values from a checkbox taxonomy metabox.
 *
 * @since 5.1.0
 *
 * @param string $taxonomy The taxonomy name.
 * @param array  $terms    Raw term data from the &#039;tax_input&#039; field.
 * @return int[] Array of sanitized term IDs.
 */
function taxonomy_meta_box_sanitize_cb_checkboxes( $taxonomy, $terms ) {
	return array_map( &#039;intval&#039;, $terms );
}

/**
 * Sanitizes POST values from an input taxonomy metabox.
 *
 * @since 5.1.0
 *
 * @param string       $taxonomy The taxonomy name.
 * @param array|string $terms    Raw term data from the &#039;tax_input&#039; field.
 * @return array
 */
function taxonomy_meta_box_sanitize_cb_input( $taxonomy, $terms ) {
	/*
	 * Assume that a &#039;tax_input&#039; string is a comma-separated list of term names.
	 * Some languages may use a character other than a comma as a delimiter, so we standardize on
	 * commas before parsing the list.
	 */
	if ( ! is_array( $terms ) ) {
		$comma = _x( &#039;,&#039;, &#039;tag delimiter&#039; );
		if ( &#039;,&#039; !== $comma ) {
			$terms = str_replace( $comma, &#039;,&#039;, $terms );
		}
		$terms = explode( &#039;,&#039;, trim( $terms, &quot; \n\t\r\0\x0B,&quot; ) );
	}

	$clean_terms = array();
	foreach ( $terms as $term ) {
		// Empty terms are invalid input.
		if ( empty( $term ) ) {
			continue;
		}

		$_term = get_terms(
			array(
				&#039;taxonomy&#039;   =&gt; $taxonomy,
				&#039;name&#039;       =&gt; $term,
				&#039;fields&#039;     =&gt; &#039;ids&#039;,
				&#039;hide_empty&#039; =&gt; false,
			)
		);

		if ( ! empty( $_term ) ) {
			$clean_terms[] = (int) $_term[0];
		} else {
			// No existing term was found, so pass the string. A new term will be created.
			$clean_terms[] = $term;
		}
	}

	return $clean_terms;
}

/**
 * Prepares server-registered blocks for the block editor.
 *
 * Returns an associative array of registered block data keyed by block name. Data includes properties
 * of a block relevant for client registration.
 *
 * @since 5.0.0
 * @since 6.3.0 Added `selectors` field.
 * @since 6.4.0 Added `block_hooks` field.
 *
 * @return array An associative array of registered block data.
 */
function get_block_editor_server_block_settings() {
	$block_registry = WP_Block_Type_Registry::get_instance();
	$blocks         = array();
	$fields_to_pick = array(
		&#039;api_version&#039;      =&gt; &#039;apiVersion&#039;,
		&#039;title&#039;            =&gt; &#039;title&#039;,
		&#039;description&#039;      =&gt; &#039;description&#039;,
		&#039;icon&#039;             =&gt; &#039;icon&#039;,
		&#039;attributes&#039;       =&gt; &#039;attributes&#039;,
		&#039;provides_context&#039; =&gt; &#039;providesContext&#039;,
		&#039;uses_context&#039;     =&gt; &#039;usesContext&#039;,
		&#039;block_hooks&#039;      =&gt; &#039;blockHooks&#039;,
		&#039;selectors&#039;        =&gt; &#039;selectors&#039;,
		&#039;supports&#039;         =&gt; &#039;supports&#039;,
		&#039;category&#039;         =&gt; &#039;category&#039;,
		&#039;styles&#039;           =&gt; &#039;styles&#039;,
		&#039;textdomain&#039;       =&gt; &#039;textdomain&#039;,
		&#039;parent&#039;           =&gt; &#039;parent&#039;,
		&#039;ancestor&#039;         =&gt; &#039;ancestor&#039;,
		&#039;keywords&#039;         =&gt; &#039;keywords&#039;,
		&#039;example&#039;          =&gt; &#039;example&#039;,
		&#039;variations&#039;       =&gt; &#039;variations&#039;,
		&#039;allowed_blocks&#039;   =&gt; &#039;allowedBlocks&#039;,
	);

	foreach ( $block_registry-&gt;get_all_registered() as $block_name =&gt; $block_type ) {
		foreach ( $fields_to_pick as $field =&gt; $key ) {
			if ( ! isset( $block_type-&gt;{ $field } ) ) {
				continue;
			}

			if ( ! isset( $blocks[ $block_name ] ) ) {
				$blocks[ $block_name ] = array();
			}

			$blocks[ $block_name ][ $key ] = $block_type-&gt;{ $field };
		}
	}

	return $blocks;
}

/**
 * Renders the meta boxes forms.
 *
 * @since 5.0.0
 *
 * @global WP_Post   $post           Global post object.
 * @global WP_Screen $current_screen WordPress current screen object.
 * @global array     $wp_meta_boxes  Global meta box state.
 */
function the_block_editor_meta_boxes() {
	global $post, $current_screen, $wp_meta_boxes;

	// Handle meta box state.
	$_original_meta_boxes = $wp_meta_boxes;

	/**
	 * Fires right before the meta boxes are rendered.
	 *
	 * This allows for the filtering of meta box data, that should already be
	 * present by this point. Do not use as a means of adding meta box data.
	 *
	 * @since 5.0.0
	 *
	 * @param array $wp_meta_boxes Global meta box state.
	 */
	$wp_meta_boxes = apply_filters( &#039;filter_block_editor_meta_boxes&#039;, $wp_meta_boxes );
	$locations     = array( &#039;side&#039;, &#039;normal&#039;, &#039;advanced&#039; );
	$priorities    = array( &#039;high&#039;, &#039;sorted&#039;, &#039;core&#039;, &#039;default&#039;, &#039;low&#039; );

	// Render meta boxes.
	?&gt;
	&lt;form class=&quot;metabox-base-form&quot;&gt;
	&lt;?php the_block_editor_meta_box_post_form_hidden_fields( $post ); ?&gt;
	&lt;/form&gt;
	&lt;form id=&quot;toggle-custom-fields-form&quot; method=&quot;post&quot; action=&quot;&lt;?php echo esc_url( admin_url( &#039;post.php&#039; ) ); ?&gt;&quot;&gt;
		&lt;?php wp_nonce_field( &#039;toggle-custom-fields&#039;, &#039;toggle-custom-fields-nonce&#039; ); ?&gt;
		&lt;input type=&quot;hidden&quot; name=&quot;action&quot; value=&quot;toggle-custom-fields&quot; /&gt;
	&lt;/form&gt;
	&lt;?php foreach ( $locations as $location ) : ?&gt;
		&lt;form class=&quot;metabox-location-&lt;?php echo esc_attr( $location ); ?&gt;&quot; onsubmit=&quot;return false;&quot;&gt;
			&lt;div id=&quot;poststuff&quot; class=&quot;sidebar-open&quot;&gt;
				&lt;div id=&quot;postbox-container-2&quot; class=&quot;postbox-container&quot;&gt;
					&lt;?php
					do_meta_boxes(
						$current_screen,
						$location,
						$post
					);
					?&gt;
				&lt;/div&gt;
			&lt;/div&gt;
		&lt;/form&gt;
	&lt;?php endforeach; ?&gt;
	&lt;?php

	$meta_boxes_per_location = array();
	foreach ( $locations as $location ) {
		$meta_boxes_per_location[ $location ] = array();

		if ( ! isset( $wp_meta_boxes[ $current_screen-&gt;id ][ $location ] ) ) {
			continue;
		}

		foreach ( $priorities as $priority ) {
			if ( ! isset( $wp_meta_boxes[ $current_screen-&gt;id ][ $location ][ $priority ] ) ) {
				continue;
			}

			$meta_boxes = (array) $wp_meta_boxes[ $current_screen-&gt;id ][ $location ][ $priority ];
			foreach ( $meta_boxes as $meta_box ) {
				if ( false === $meta_box || ! $meta_box[&#039;title&#039;] ) {
					continue;
				}

				// If a meta box is just here for back compat, don&#039;t show it in the block editor.
				if ( isset( $meta_box[&#039;args&#039;][&#039;__back_compat_meta_box&#039;] ) &amp;&amp; $meta_box[&#039;args&#039;][&#039;__back_compat_meta_box&#039;] ) {
					continue;
				}

				$meta_boxes_per_location[ $location ][] = array(
					&#039;id&#039;    =&gt; $meta_box[&#039;id&#039;],
					&#039;title&#039; =&gt; $meta_box[&#039;title&#039;],
				);
			}
		}
	}

	/*
	 * Sadly we probably cannot add this data directly into editor settings.
	 *
	 * Some meta boxes need `admin_head` to fire for meta box registry.
	 * `admin_head` fires after `admin_enqueue_scripts`, which is where we create
	 * our editor instance.
	 */
	$script = &#039;window._wpLoadBlockEditor.then( function() {
		wp.data.dispatch( \&#039;core/edit-post\&#039; ).setAvailableMetaBoxesPerLocation( &#039; . wp_json_encode( $meta_boxes_per_location, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ) . &#039; );
	} );&#039;;

	wp_add_inline_script( &#039;wp-edit-post&#039;, $script );

	/*
	 * When `wp-edit-post` is output in the `&lt;head&gt;`, the inline script needs to be manually printed.
	 * Otherwise, meta boxes will not display because inline scripts for `wp-edit-post`
	 * will not be printed again after this point.
	 */
	if ( wp_script_is( &#039;wp-edit-post&#039;, &#039;done&#039; ) ) {
		printf( &quot;&lt;script type=&#039;text/javascript&#039;&gt;\n%s\n&lt;/script&gt;\n&quot;, trim( $script ) );
	}

	/*
	 * If the &#039;postcustom&#039; meta box is enabled, then we need to perform
	 * some extra initialization on it.
	 */
	$enable_custom_fields = (bool) get_user_meta( get_current_user_id(), &#039;enable_custom_fields&#039;, true );

	if ( $enable_custom_fields ) {
		$script = &quot;( function( $ ) {
			if ( $(&#039;#postcustom&#039;).length ) {
				$( &#039;#the-list&#039; ).wpList( {
					addBefore: function( s ) {
						s.data += &#039;&amp;post_id=$post-&gt;ID&#039;;
						return s;
					},
					addAfter: function() {
						$(&#039;table#list-table&#039;).show();
					}
				});
			}
		} )( jQuery );&quot;;
		wp_enqueue_script( &#039;wp-lists&#039; );
		wp_add_inline_script( &#039;wp-lists&#039;, $script );
	}

	/*
	 * Refresh nonces used by the meta box loader.
	 *
	 * The logic is very similar to that provided by post.js for the classic editor.
	 */
	$script = &quot;( function( $ ) {
		var check, timeout;

		function schedule() {
			check = false;
			window.clearTimeout( timeout );
			timeout = window.setTimeout( function() { check = true; }, 300000 );
		}

		$( document ).on( &#039;heartbeat-send.wp-refresh-nonces&#039;, function( e, data ) {
			var post_id, \$authCheck = $( &#039;#wp-auth-check-wrap&#039; );

			if ( check || ( \$authCheck.length &amp;&amp; ! \$authCheck.hasClass( &#039;hidden&#039; ) ) ) {
				if ( ( post_id = $( &#039;#post_ID&#039; ).val() ) &amp;&amp; $( &#039;#_wpnonce&#039; ).val() ) {
					data[&#039;wp-refresh-metabox-loader-nonces&#039;] = {
						post_id: post_id
					};
				}
			}
		}).on( &#039;heartbeat-tick.wp-refresh-nonces&#039;, function( e, data ) {
			var nonces = data[&#039;wp-refresh-metabox-loader-nonces&#039;];

			if ( nonces ) {
				if ( nonces.replace ) {
					if ( nonces.replace.metabox_loader_nonce &amp;&amp; window._wpMetaBoxUrl &amp;&amp; wp.url ) {
						window._wpMetaBoxUrl= wp.url.addQueryArgs( window._wpMetaBoxUrl, { &#039;meta-box-loader-nonce&#039;: nonces.replace.metabox_loader_nonce } );
					}

					if ( nonces.replace._wpnonce ) {
						$( &#039;#_wpnonce&#039; ).val( nonces.replace._wpnonce );
					}
				}
			}
		}).ready( function() {
			schedule();
		});
	} )( jQuery );&quot;;
	wp_add_inline_script( &#039;heartbeat&#039;, $script );

	// Reset meta box data.
	$wp_meta_boxes = $_original_meta_boxes;
}

/**
 * Renders the hidden form required for the meta boxes form.
 *
 * @since 5.0.0
 *
 * @param WP_Post $post Current post object.
 */
function the_block_editor_meta_box_post_form_hidden_fields( $post ) {
	$form_extra = &#039;&#039;;
	if ( &#039;auto-draft&#039; === $post-&gt;post_status ) {
		$form_extra .= &quot;&lt;input type=&#039;hidden&#039; id=&#039;auto_draft&#039; name=&#039;auto_draft&#039; value=&#039;1&#039; /&gt;&quot;;
	}
	$form_action  = &#039;editpost&#039;;
	$nonce_action = &#039;update-post_&#039; . $post-&gt;ID;
	$form_extra  .= &quot;&lt;input type=&#039;hidden&#039; id=&#039;post_ID&#039; name=&#039;post_ID&#039; value=&#039;&quot; . esc_attr( $post-&gt;ID ) . &quot;&#039; /&gt;&quot;;
	$referer      = wp_get_referer();
	$current_user = wp_get_current_user();
	$user_id      = $current_user-&gt;ID;
	wp_nonce_field( $nonce_action );

	/*
	 * Some meta boxes hook into these actions to add hidden input fields in the classic post form.
	 * For backward compatibility, we can capture the output from these actions,
	 * and extract the hidden input fields.
	 */
	ob_start();
	/** This filter is documented in wp-admin/edit-form-advanced.php */
	do_action( &#039;edit_form_after_title&#039;, $post );
	/** This filter is documented in wp-admin/edit-form-advanced.php */
	do_action( &#039;edit_form_advanced&#039;, $post );
	$classic_output = ob_get_clean();

	$classic_elements = wp_html_split( $classic_output );
	$hidden_inputs    = &#039;&#039;;
	foreach ( $classic_elements as $element ) {
		if ( ! str_starts_with( $element, &#039;&lt;input &#039; ) ) {
			continue;
		}

		if ( preg_match( &#039;/\stype=[\&#039;&quot;]hidden[\&#039;&quot;]\s/&#039;, $element ) ) {
			echo $element;
		}
	}
	?&gt;
	&lt;input type=&quot;hidden&quot; id=&quot;user-id&quot; name=&quot;user_ID&quot; value=&quot;&lt;?php echo (int) $user_id; ?&gt;&quot; /&gt;
	&lt;input type=&quot;hidden&quot; id=&quot;hiddenaction&quot; name=&quot;action&quot; value=&quot;&lt;?php echo esc_attr( $form_action ); ?&gt;&quot; /&gt;
	&lt;input type=&quot;hidden&quot; id=&quot;originalaction&quot; name=&quot;originalaction&quot; value=&quot;&lt;?php echo esc_attr( $form_action ); ?&gt;&quot; /&gt;
	&lt;input type=&quot;hidden&quot; id=&quot;post_type&quot; name=&quot;post_type&quot; value=&quot;&lt;?php echo esc_attr( $post-&gt;post_type ); ?&gt;&quot; /&gt;
	&lt;input type=&quot;hidden&quot; id=&quot;original_post_status&quot; name=&quot;original_post_status&quot; value=&quot;&lt;?php echo esc_attr( $post-&gt;post_status ); ?&gt;&quot; /&gt;
	&lt;input type=&quot;hidden&quot; id=&quot;referredby&quot; name=&quot;referredby&quot; value=&quot;&lt;?php echo $referer ? esc_url( $referer ) : &#039;&#039;; ?&gt;&quot; /&gt;

	&lt;?php
	if ( &#039;draft&#039; !== get_post_status( $post ) ) {
		wp_original_referer_field( true, &#039;previous&#039; );
	}
	echo $form_extra;
	wp_nonce_field( &#039;meta-box-order&#039;, &#039;meta-box-order-nonce&#039;, false );
	wp_nonce_field( &#039;closedpostboxes&#039;, &#039;closedpostboxesnonce&#039;, false );
	// Permalink title nonce.
	wp_nonce_field( &#039;samplepermalink&#039;, &#039;samplepermalinknonce&#039;, false );

	/**
	 * Adds hidden input fields to the meta box save form.
	 *
	 * Hook into this action to print `&lt;input type=&quot;hidden&quot; ... /&gt;` fields, which will be POSTed back to
	 * the server when meta boxes are saved.
	 *
	 * @since 5.0.0
	 *
	 * @param WP_Post $post The post that is being edited.
	 */
	do_action( &#039;block_editor_meta_box_hidden_fields&#039;, $post );
}

/**
 * Disables block editor for wp_navigation type posts so they can be managed via the UI.
 *
 * @since 5.9.0
 * @access private
 *
 * @param bool   $value Whether the CPT supports block editor or not.
 * @param string $post_type Post type.
 * @return bool Whether the block editor should be disabled or not.
 */
function _disable_block_editor_for_navigation_post_type( $value, $post_type ) {
	if ( &#039;wp_navigation&#039; === $post_type ) {
		return false;
	}

	return $value;
}

/**
 * This callback disables the content editor for wp_navigation type posts.
 * Content editor cannot handle wp_navigation type posts correctly.
 * We cannot disable the &quot;editor&quot; feature in the wp_navigation&#039;s CPT definition
 * because it disables the ability to save navigation blocks via REST API.
 *
 * @since 5.9.0
 * @access private
 *
 * @param WP_Post $post An instance of WP_Post class.
 */
function _disable_content_editor_for_navigation_post_type( $post ) {
	$post_type = get_post_type( $post );
	if ( &#039;wp_navigation&#039; !== $post_type ) {
		return;
	}

	remove_post_type_support( $post_type, &#039;editor&#039; );
}

/**
 * This callback enables content editor for wp_navigation type posts.
 * We need to enable it back because we disable it to hide
 * the content editor for wp_navigation type posts.
 *
 * @since 5.9.0
 * @access private
 *
 * @see _disable_content_editor_for_navigation_post_type
 *
 * @param WP_Post $post An instance of WP_Post class.
 */
function _enable_content_editor_for_navigation_post_type( $post ) {
	$post_type = get_post_type( $post );
	if ( &#039;wp_navigation&#039; !== $post_type ) {
		return;
	}

	add_post_type_support( $post_type, &#039;editor&#039; );
}
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