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<?php $a = array( '2014-10-11 12:35:42', '2014-10-23 10:27:08', '2014-10-11 12:26:59' ); var_dump($a); var_dump(arsort($a));
based on mNLHD
Output for 4.3.0 - 7.1.0
array(3) { [0]=> string(19) "2014-10-11 12:35:42" [1]=> string(19) "2014-10-23 10:27:08" [2]=> string(19) "2014-10-11 12:26:59" } bool(true)