WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 244 | * (post, comment, term, user, or any other type with an associated meta table). |
| 245 | * |
| 246 | * @since 2.9.0 |
| 247 | * |
| 248 | * @param int $meta_id ID of the metadata entry to update. |
| 249 | * @param int $object_id ID of the object metadata is for. |
| 250 | * @param string $meta_key Metadata key. |
| 251 | * @param mixed $_meta_value Metadata value. Serialized if non-scalar. |
| 252 | */ |
| 253 | do_action( "update_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value ); |
| 254 | |
| 255 | if ( 'post' === $meta_type ) { |
| 256 | /** |
| 257 | * Fires immediately before updating a post's metadata. |
| 258 | * |
| 259 | * @since 2.9.0 |
| 260 | * |
| 261 | * @param int $meta_id ID of metadata entry to update. |
| 262 | * @param int $object_id Post ID. |
| Line | Code |
| 851 | 'meta_key' => $meta_key, |
| 852 | 'meta_value' => $meta_value, |
| 853 | ); |
| 854 | |
| 855 | // Format the where query arguments. |
| 856 | $where = array(); |
| 857 | $where[ $id_column ] = $meta_id; |
| 858 | |
| 859 | /** This action is documented in wp-includes/meta.php */ |
| 860 | do_action( "update_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value ); |
| 861 | |
| 862 | if ( 'post' === $meta_type ) { |
| 863 | /** This action is documented in wp-includes/meta.php */ |
| 864 | do_action( 'update_postmeta', $meta_id, $object_id, $meta_key, $meta_value ); |
| 865 | } |
| 866 | |
| 867 | // Run the update query, all fields in $data are %s, $where is a %d. |
| 868 | $result = $wpdb->update( $table, $data, $where, '%s', '%d' ); |
| 869 | if ( ! $result ) { |