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<?php $array[] = Array(Array(0=>'December', 1=>'1', 2=>'2013'),'stamp'=> 1385874000); $array[] = Array(Array(0=>'December', 1=>'1', 2=>'2013'),'stamp'=> 1388293200); $array[] = Array(Array(0=>'December', 1=>'1', 2=>'2013'),'stamp'=> 1357189200); usort($array, function($a, $b) { return $a['stamp'] - $b['stamp']; }); ?>
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