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filter is not described

is_protected_meta filter-hook . WP 3.2.0

Filters whether a meta key is considered protected.

Usage

add_filter( 'is_protected_meta', 'filter_function_name_2939', 10, 3 );
function filter_function_name_2939( $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 'post', 'comment', 'term', 'user', or any other object type with an associated meta table.

Changelog

Since 3.2.0 Introduced.

Where the hook is called

is_protected_meta()
is_protected_meta
wp-includes/meta.php 1060
return apply_filters( 'is_protected_meta', $protected, $meta_key, $meta_type );

Where in WP core the hook is used

Usage not found!