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<?php $a = Array('aa'); $b = array('bb'); var_dump($a); var_dump($b);
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0rc3
array(1) { [0]=> string(2) "aa" } array(1) { [0]=> string(2) "bb" }