Online PHP editor | refs for 5EPVv

<?php $a = array(array("data" => "abcd", "edit" => "1", "day" => "05", "month" => "04", "year" => "2013"), array("data" => "efgh", "edit" => "2", "day" => "07", "month" => "03", "year" => "2013")); function cmp($a, $b) { $date1 = DateTime::createFromFormat("d/m/Y", $a["day"].'/'.$a["month"].'/'.$a["year"]); $date2 = DateTime::createFromFormat("d/m/Y", $b["day"].'/'.$b["month"].'/'.$b["year"]); return $date1->getTimestamp() - $date2->getTimestamp(); } usort($a, "cmp"); print_r($a);