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run code in 150+ php & hhvm versions
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<?php function test($arr = array()) { var_dump($arr); return $arr; } $arr =& test(); var_dump($arr);
Output for 4.4.0 - 4.4.9, 7.0.0 - 7.1.0
array(0) { } Notice: Only variables should be assigned by reference in /in/TRskG on line 6 array(0) { }
Output for 4.3.0 - 4.3.11, 5.0.0 - 5.0.4, hhvm-3.10.0 - 3.12.0
array(0) { } array(0) { }
Output for 5.0.5 - 5.6.28
array(0) { } Strict Standards: Only variables should be assigned by reference in /in/TRskG on line 6 array(0) { }