woocommerce_quantity_input_step │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_quantity_input_step', 'wp_kama_woocommerce_quantity_input_step_filter', 10, 2 );

/**
 * Function for `woocommerce_quantity_input_step` filter-hook.
 * 
 * @param  $string  
 * @param  $product 
 *
 * @return 
 */
function wp_kama_woocommerce_quantity_input_step_filter( $string, $product ){

	// filter...
	return $string;
}

$string

-

$product

-

Where the hook is called

$step = apply_filters( 'woocommerce_quantity_input_step', '1', $product );

'step'         => apply_filters( 'woocommerce_quantity_input_step', 1, $product ),

Where the hook is used in WooCommerce