3v4l.org

run code in 300+ PHP versions simultaneously
<?php $start=strtotime('00:00'); $end=strtotime('23:30'); for ($halfhour=$start;$halfhour<=$end;$halfhour=$halfhour+30*60) { printf('<option value="%s">%s</option>',date('H:i',$halfhour),date('g:i a',$halfhour)); } ?>

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