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run code in 150+ php & hhvm versions
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<?php $arr = array('a', 'b'); /*foreach ($arr as &$a) { var_dump($a); } var_dump($arr); */ foreach ($arr as $a) { var_dump($a); }
based on NPg79
Output for 4.3.0 - 5.6.25, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
string(1) "a" string(1) "b"