(hook_prefix)sku filter-hook . WC 1.0

Inherit value from parent.

Usage

add_filter( '(hook_prefix)sku', 'filter_function_name_4415', 10, 2 );
function filter_function_name_4415( $parent_data_sku, $that ){
	// filter...

	return $parent_data_sku;
}

$parent_data_sku

-

$that

-

Where the hook is called

$value = apply_filters( $this->get_hook_prefix() . 'sku', $this->parent_data['sku'], $this );

Where in WP core the hook is used WooCommerce