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<?php $array1 = array('foo' => 'bar'); $array2 = array(1 => 2); $array3 = array('baz' => 'bat'); $array4 = array('lorem' => 'ipsum'); $array5 = array('poop' => 'smelly'); var_dump(call_user_func_array('array_merge', array($array1, $array2, $array3, $array4, $array5)));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(5) { ["foo"]=> string(3) "bar" [0]=> int(2) ["baz"]=> string(3) "bat" ["lorem"]=> string(5) "ipsum" ["poop"]=> string(6) "smelly" }