woocommerce_add_to_cart_hash │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_add_to_cart_hash', 'wp_kama_woocommerce_add_to_cart_hash_filter', 10, 2 );

/**
 * Function for `woocommerce_add_to_cart_hash` filter-hook.
 * 
 * @param  $array  
 * @param  $string 
 *
 * @return 
 */
function wp_kama_woocommerce_add_to_cart_hash_filter( $array, $string ){

	// filter...
	return $array;
}

$array

-

$string

-

Where the hook is called

$hash         = apply_filters_deprecated( 'woocommerce_add_to_cart_hash', array( $hash, $cart_session ), '3.6.0', 'woocommerce_cart_hash' );

Where the hook is used in WooCommerce