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<?php $time ='2013-03-31 01:15:00'; $stamp = strtotime($time); for($i=0; $i<4; $i++){ echo date('Y-m-d H:i:s', strtotime("+{$i} hours", $stamp))."<br />\n"; }

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33.96 ms | 402 KiB | 5 Q