WordPress at a glance
filter is not described

postmeta_form_limit filter-hook . WP 2.1.0

Filters the number of custom fields to retrieve for the drop-down in the Custom Fields meta box.


add_filter( 'postmeta_form_limit', 'filter_function_name_1055' );
function filter_function_name_1055( $limit ){
	// filter...

	return $limit;
Number of custom fields to retrieve.
Default: 30

Where the hook is called

wp-admin/includes/template.php 672
$limit = apply_filters( 'postmeta_form_limit', 30 );

Where the hook is used (in WP core)

Does not used.