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run code in 150+ php & hhvm versions
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<?php print_r($array['notset']); print_r($_POST);
Output for 5.0.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: array in /in/Z0Q86 on line 3 Array ( )
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: array in /in/Z0Q86 on line 3 Array ( )