<?php function sortFunction( $a, $b ) { return strtotime($a["date"]) - strtotime($b["date"]); } $data = '[{"date":"2013-09-01 00:00:02","content":"1"}, {"date":"2013-09-01 00:00:09","content":"5"}, {"date":"2013-09-01 00:00:01","content":"3"}]'; usort($data, "sortFunction"); var_dump($data);
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