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<?php $arr = array( '4/9/2014', '3/9/2014', '2/9/2014', '5/9/2014', '1/9/2014' ); foreach ($arr as &$elem) { $elem = preg_replace('/2014/', '', $elem); } var_dump($arr); foreach ($arr as $elem) { $elem = $elem . 'BLAH'; } var_dump($arr);

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67.87 ms | 402 KiB | 5 Q