is_protected_meta │ filter-hook │ WP 3.2.0

Filters whether a meta key is considered protected.

Usage

add_filter( 'is_protected_meta', 'wp_kama_is_protected_meta_filter', 10, 3 );

/**
 * Function for `is_protected_meta` filter-hook.
 * 
 * @param bool   $protected Whether the key is considered protected.
 * @param string $meta_key  Metadata key.
 * @param string $meta_type Type of object metadata is for. Accepts 'blog', 'post', 'comment', 'term', 'user', or any other object type with an associated meta table.
 *
 * @return bool
 */
function wp_kama_is_protected_meta_filter( $protected, $meta_key, $meta_type ){

	// filter...
	return $protected;
}

$protected(true|false)

Whether the key is considered protected.

$meta_key(string)

Metadata key.

$meta_type(string)

Type of object metadata is for. Accepts 'blog', 'post', 'comment', 'term', 'user', or any other object type with an associated meta table.

Changelog

Where the hook is called

return apply_filters( 'is_protected_meta', $protected, $meta_key, $meta_type );

Where the hook is used in WordPress