woocommerce-order-failed-notification-by-sms-part1.php

<?php
function catch_new_order($orderid){

	// Check for new order
	// Set a scheduled event after 10min to check if order has been succesfully proccesed.
	// If not, send SMS with orderID and name of client.
	
	// 1: We are setting the time of the event after 10 minutes.
	// 2: We provide an action to be called if the event is run.
	// 3: We provide additional parameters to got with the action. In this case our order id.
	wp_schedule_single_event( time() + 600, 'send_sms_if_order_failed', array( $orderid ) );
	
}
add_action( 'woocommerce_new_order', 'catch_new_order', 10, 1 );