postmeta_form_limit │ filter-hook │ WP 2.1.0

Allows you to change the number of custom fields displayed in the drop-down list in the meta-fields meta box on the post editing screen.

This list is built from all meta-fields that have ever been added to any post on the site. Therefore, do not specify large values in the filter, as this will slow down page loading.

The value returned by this filter is passed to $wpdb->get_col() as the SQL LIMIT operator.

Usage

add_filter( 'postmeta_form_limit', 'wp_kama_postmeta_form_limit_filter' );

/**
 * Function for `postmeta_form_limit` filter-hook.
 * 
 * @param int $limit Number of custom fields to retrieve.
 *
 * @return int
 */
function wp_kama_postmeta_form_limit_filter( $limit ){
	// filter...
	return $limit;
}

$limit(integer)

The number of custom fields displayed.
Default: 30

Examples

#1 Change the number of custom fields displayed

add_filter( 'postmeta_form_limit', 'filter_postmeta_form_limit' );
function filter_postmeta_form_limit() {
	return 5;
}