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<?php $refVariable = false; $refName = 'refVariable'; $callback = function() use (&$refVariable) { static $foo = refVariable; var_dump($refVariable); var_dump($foo); }; $function = new \ReflectionFunction($callback); $staticVariables = $function->getStaticVariables(); $callback(); $staticVariables['foo'] = 8; $callback();
Output for 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Undefined constant "refVariable" in /in/ZRRcn:5 Stack trace: #0 /in/ZRRcn(8): {closure}() #1 {main} thrown in /in/ZRRcn on line 5
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Fatal error: Uncaught Error: Undefined constant "refVariable" in /in/ZRRcn:7 Stack trace: #0 /in/ZRRcn(7): ReflectionFunctionAbstract->getStaticVariables() #1 {main} thrown in /in/ZRRcn on line 7
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant refVariable - assumed 'refVariable' (this will throw an Error in a future version of PHP) in /in/ZRRcn on line 7 bool(false) string(11) "refVariable" bool(false) string(11) "refVariable"
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33
Notice: Use of undefined constant refVariable - assumed 'refVariable' in /in/ZRRcn on line 7 bool(false) string(11) "refVariable" bool(false) string(11) "refVariable"
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/ZRRcn 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/ZRRcn on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/ZRRcn on line 5
Process exited with code 255.

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