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<?php $bar = "nasty"; $closure = function($foo) use ($bar) {}; $reflect = new ReflectionFunction($closure); print_r($reflect->getClosureScopeClass()->getProperties());
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Call to a member function getProperties() on null in /in/ntURL:8 Stack trace: #0 {main} thrown in /in/ntURL on line 8
Process exited with code 255.
Output for 5.6.0 - 5.6.40
Fatal error: Call to a member function getProperties() on null in /in/ntURL on line 8
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38
Fatal error: Call to a member function getProperties() on a non-object in /in/ntURL on line 8
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Fatal error: Call to undefined method ReflectionFunction::getClosureScopeClass() in /in/ntURL on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/ntURL on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/ntURL on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/ntURL on line 5
Process exited with code 255.

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