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sanitize_(object_type)_meta_(meta_key) filter-hook . WP 3.3.0

Filters the sanitization of a specific meta key of a specific meta type.

The dynamic portions of the hook name, $meta_type, and $meta_key, refer to the metadata object type (comment, post, term, or user) and the meta key value, respectively.

Usage

add_filter( 'sanitize_(object_type)_meta_(meta_key)', 'filter_function_name_7419', 10, 3 );
function filter_function_name_7419( $meta_value, $meta_key, $object_type ){
	// filter...

	return $meta_value;
}
$meta_value(mixed)
Meta value to sanitize.
$meta_key(string)
Meta key.
$object_type(string)
Object type.

Where the hook is called

sanitize_meta()
wp-includes/meta.php 1056
return apply_filters( "sanitize_{$object_type}_meta_{$meta_key}", $meta_value, $meta_key, $object_type );

Where the hook is used (in WP core)

wp-includes/meta.php 1159
add_filter( "sanitize_{$object_type}_meta_{$meta_key}_for_{$object_subtype}", $args['sanitize_callback'], 10, 4 );
wp-includes/meta.php 1161
add_filter( "sanitize_{$object_type}_meta_{$meta_key}", $args['sanitize_callback'], 10, 3 );
wp-includes/meta.php 1226
remove_filter( "sanitize_{$object_type}_meta_{$meta_key}_for_{$object_subtype}", $args['sanitize_callback'] );
wp-includes/meta.php 1228
remove_filter( "sanitize_{$object_type}_meta_{$meta_key}", $args['sanitize_callback'] );