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run code in 150+ php & hhvm versions
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<?php $arrTest = array(); $anonFunc = function () use ($arrTest) { $arrTest['test'] = 'hello'; if (!isset($arrTest['test2'])) { return $arrTest['test2'] = 1; } }; var_dump($arrTest); var_dump(getArrTest());
Output for 7.0.0 - 7.1.0
array(0) { } Fatal error: Uncaught Error: Call to undefined function getArrTest() in /in/AcaeG:13 Stack trace: #0 {main} thrown in /in/AcaeG on line 13
Process exited with code 255.
Output for 5.3.0 - 5.6.28, hhvm-3.12.0
array(0) { } Fatal error: Call to undefined function getArrTest() in /in/AcaeG on line 13
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/AcaeG on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/AcaeG on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/AcaeG on line 3
Process exited with code 255.