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

Simplest solution

$h = 0;
while ($h < 24) {
    $key = date('H:i', strtotime(date('Y-m-d') . ' + ' . $h . ' hours'));
    $value = date('h:i A', strtotime(date('Y-m-d') . ' + ' . $h . ' hours'));
    $formatter[$key] = $value;
    $h++;
}

Result are:

Array
(
    [00:00] => 12:00 AM
    [01:00] => 01:00 AM
    [02:00] => 02:00 AM
    [03:00] => 03:00 AM
    [04:00] => 04:00 AM
    [05:00] => 05:00 AM
    [06:00] => 06:00 AM
    [07:00] => 07:00 AM
    [08:00] => 08:00 AM
    [09:00] => 09:00 AM
    [10:00] => 10:00 AM
    [11:00] => 11:00 AM
    [12:00] => 12:00 PM
    [13:00] => 01:00 PM
    [14:00] => 02:00 PM
    [15:00] => 03:00 PM
    [16:00] => 04:00 PM
    [17:00] => 05:00 PM
    [18:00] => 06:00 PM
    [19:00] => 07:00 PM
    [20:00] => 08:00 PM
    [21:00] => 09:00 PM
    [22:00] => 10:00 PM
    [23:00] => 11:00 PM
)