PHP class to create a range of times suitable for form select dropdowns.

create_time_range.php

/*
    Usage:
    create array of time ranges 
    $times = create_time_range('9:30', '17:30', '30 mins'); 

    more examples:
    $times = create_time_range('9:30am', '5:30pm', '30 mins'); 
    $times = create_time_range('9:30am', '5:30pm', '1 mins'); 
    $times = create_time_range('9:30am', '5:30pm', '30 secs'); 

    format the unix timestamps: 
    foreach ($times as $key => $time) { 
        $times[$key] = date('g:i:s', $time); 
    } 
*/

function create_time_range($start, $end, $step = '30 mins') { 

		$start_time = strtotime($start); 
		$end_time   = strtotime($end); 
	
		$current    = time(); 
		$add_time   = strtotime('+' . $step, $current); 
		$diff       = $add_time-$current; 
	
		$times = array(); 
		
		while ($start_time < $end_time) { 
			$times[] = $start_time; 
			$start_time += $diff; 
		} 
		
		$times[] = $start_time; 
		
		return $times; 
}