How can I make an array of times with half hour intervals?

Question

I needed a list of times like so in an array...

12am
12:30am
1:00pm
...

How can I do this with PHP?

Answer 1

Here's a more flexible version that doesn't need DateTime (since we're already working with timestamps in seconds anyway). ;-)

function get_hours_range( $start = 0, $end = 86400, $step = 3600, $format = 'g:i a' ) {
        $times = array();
        foreach ( range( $start, $end, $step ) as $timestamp ) {
                $hour_mins = gmdate( 'H:i', $timestamp );
                if ( ! empty( $format ) )
                        $times[$hour_mins] = gmdate( $format, $timestamp );
                else $times[$hour_mins] = $hour_mins;
        }
        return $times;
}

Answer 2

Added index value as hour:

Here is the code:

<?php

    $time_slot= array();
        
        if ( empty( $format ) ) {
            $format = 'H:i';
        }
        $lower = 0; $upper = 86400; $step = 3600; $format = '';
        $i = 0;
        foreach ( range( $lower, $upper, $step ) as $increment ) {
            $increment = gmdate( 'H:i', $increment );
           
        
             
            $time_slot[$i] = $increment;
            $i++;
        }
    
        print_r($time_slot);

?>

Here is the result:

Array
(
    [0] => 00:00
    [1] => 01:00
    [2] => 02:00
    [3] => 03:00
    [4] => 04:00
    [5] => 05:00
    [6] => 06:00
    [7] => 07:00
    [8] => 08:00
    [9] => 09:00
    [10] => 10:00
    [11] => 11:00
    [12] => 12:00
    [13] => 13:00
    [14] => 14:00
    [15] => 15:00
    [16] => 16:00
    [17] => 17:00
    [18] => 18:00
    [19] => 19:00
    [20] => 20:00
    [21] => 21:00
    [22] => 22:00
    [23] => 23:00
    [24] => 00:00
)

Answer 3

Here is my suggestion :

    $start = new \DateTime('00:00');
    $times = 24 * 2; // 24 hours * 30 mins in an hour

    for ($i = 0; $i < $times-1; $i++) {
        $result[] = $start->add(new \DateInterval('PT30M'))->format('H:i A');
    }

    print_r($result);

Hope this help.