woocommerce_quantity_input_classes │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_quantity_input_classes', 'wp_kama_woocommerce_quantity_input_classes_filter', 10, 2 );

/**
 * Function for `woocommerce_quantity_input_classes` filter-hook.
 * 
 * @param  $array   
 * @param  $product 
 *
 * @return 
 */
function wp_kama_woocommerce_quantity_input_classes_filter( $array, $product ){

	// filter...
	return $array;
}

$array

-

$product

-

Where the hook is called

'classes'      => apply_filters( 'woocommerce_quantity_input_classes', array( 'input-text', 'qty', 'text' ), $product ),

Where the hook is used in WooCommerce