Online PHP editor | refs for jFoTQ

<?php function getRoundedCutoff ($t) { list($hour, $min, $sec) = explode(':', $t); $rmin = $min % 15; $dt = new DateTime( $t ); if ( $sec > 30 ) { $dt = $dt->add(new DateInterval('PT'.(60-$sec).'M')); } else { $dt = $dt->sub(new DateInterval('PT'.$sec.'M')); } if ( $rmin > 7 ) { $dt = $dt->add(new DateInterval('PT'.(15-$rmin).'M')); } else { $dt = $dt->sub(new DateInterval('PT'.$rmin.'M')); } return $dt->format('H:i:s'); } $times = array( '10:52:00', '10:52:59', '10:53:00', '10:50:00', '10:50:14', '10:50:59', '10:50:45', '01:12:00', '01:05:00', '01:58:00', '01:58:59', '01:59:59', '01:01:00', ); foreach ($times as $time) { var_dump($time.' -> '.getRoundedCutoff($time)); }