update_(meta_type)_metadata_by_mid │ filter-hook │ WP 5.0.0

Short-circuits updating metadata of a specific type by meta ID.

The dynamic portion of the hook name, $meta_type, refers to the meta object type (post, comment, term, user, or any other type with an associated meta table). Returning a non-null value will effectively short-circuit the function.

Possible hook names include:

• update_post_metadata_by_mid
• update_comment_metadata_by_mid
• update_term_metadata_by_mid
• update_user_metadata_by_mid

Usage

add_filter( 'update_(meta_type)_metadata_by_mid', 'wp_kama_update_meta_type_metadata_by_mid_filter', 10, 4 );

/**
 * Function for `update_(meta_type)_metadata_by_mid` filter-hook.
 * 
 * @param null|bool    $check      Whether to allow updating metadata for the given type.
 * @param int          $meta_id    Meta ID.
 * @param mixed        $meta_value Meta value. Must be serializable if non-scalar.
 * @param string|false $meta_key   Meta key, if provided.
 *
 * @return null|bool
 */
function wp_kama_update_meta_type_metadata_by_mid_filter( $check, $meta_id, $meta_value, $meta_key ){

	// filter...
	return $check;
}

$check(null|true|false)

Whether to allow updating metadata for the given type.

$meta_id(int)

Meta ID.

$meta_value(mixed)

Meta value. Must be serializable if non-scalar.

$meta_key(string|false)

Meta key, if provided.

Changelog

Where the hook is called

$check = apply_filters( "update_{$meta_type}_metadata_by_mid", null, $meta_id, $meta_value, $meta_key );

Where the hook is used in WordPress

add_filter( 'update_term_metadata_by_mid', 'wp_check_term_meta_support_prefilter' );

add_filter( 'update_blog_metadata_by_mid', 'wp_check_site_meta_support_prefilter' );