Remove a time slot as soon as the time slot start time is reached

remove-slots-as-soon-as-time-start.php

<?php
/* This code remove the time slot as soon as the time slot starts */
add_filter('pisol_dtt_custom_remove_time_slots', 'pisolStopWhenStartSlotReached',100,2);
function pisolStopWhenStartSlotReached($slots, $date){
	
	$current_date = current_time('Y/m/d');
	$current_time = current_time("H:i");

	if($date == $current_date){
		
		foreach($slots as $id => $val){
			if(isset($val['from']) && (strtotime($current_time) >= strtotime($val['from']))){
				unset($slots[$id]);
			}
		}
		
	}
	return $slots;
}