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<?php $ar1 = array('a', 'b'); $ar2 = array('c', 'd'); print_r($ar1 + $ar2); print_r(array_merge($ar1, $ar2));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => a [1] => b ) Array ( [0] => a [1] => b [2] => c [3] => d )