_wp_register_meta_args_allowed_list() WordPress Function

The wp_register_meta_args_allowed_list function is used to register a list of allowed keys for a specific metadata type. This function should be called in the ‘init’ action. The first parameter is the name of the metadata type. The second parameter is an array of allowed keys. This function allows you to specify which keys are allowed for a specific metadata type. This can be useful for ensuring that only valid keys are used when adding metadata to an object.

_wp_register_meta_args_allowed_list( array $args, array $default_args ) #

function _wp_register_meta_args_allowed_list( $args, $default_args ) {
	return array_intersect_key( $args, $default_args );
}