WordPress at a glance
filter is not described

(hook_prefix)length filter-hook . WC 1.0

Inherit value from parent.

Usage

add_filter( '(hook_prefix)length', 'filter_function_name_1897', 10, 2 );
function filter_function_name_1897( $parent_data_length, $that ){
	// filter...

	return $parent_data_length;
}
$parent_data_length
-
$that
-

Where the hook is called

WC_Product_Variation::get_length()
(hook_prefix)length
woocommerce/includes/class-wc-product-variation.php 246
$value = apply_filters( $this->get_hook_prefix() . 'length', $this->parent_data['length'], $this );

Where the hook is used (in WC core)

Usage not found!