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<?php namespace X; $f = function () {}; $r = new \ReflectionMethod($f, '__invoke'); var_dump($r->isClosure()); var_dump($r->getClosureScopeClass());
based on kAJgB
Output for 5.4.0 - 7.1.0
bool(false) NULL
Output for 5.3.0 - 5.3.29
bool(false) Fatal error: Call to undefined method ReflectionMethod::getClosureScopeClass() in /in/CD2Um on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_STRING in /in/CD2Um 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_STRING in /in/CD2Um on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/CD2Um on line 3
Process exited with code 255.