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<?php class A { private $a = 'ahoj'; private function __invoke(&$a) { echo $this->a; } } $a = new A; $a('ahoj'); $ref = new \ReflectionMethod($a, '__invoke'); $ref->setAccessible(true); $ref->invoke($a, 'ahoj');
Output for 8.3.0 - 8.3.7
Warning: The magic method A::__invoke() must have public visibility in /in/Ih9q5 on line 5 Fatal error: Uncaught Error: A::__invoke(): Argument #1 ($a) could not be passed by reference in /in/Ih9q5:12 Stack trace: #0 {main} thrown in /in/Ih9q5 on line 12
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Warning: The magic method A::__invoke() must have public visibility in /in/Ih9q5 on line 5 Fatal error: Uncaught Error: A::__invoke(): Argument #1 ($a) cannot be passed by reference in /in/Ih9q5:12 Stack trace: #0 {main} thrown in /in/Ih9q5 on line 12
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: The magic method __invoke() must have public visibility and cannot be static in /in/Ih9q5 on line 5 Fatal error: Uncaught Error: Cannot pass parameter 1 by reference in /in/Ih9q5:12 Stack trace: #0 {main} thrown in /in/Ih9q5 on line 12
Process exited with code 255.
Output for 5.5.0 - 5.5.36, 5.6.0 - 5.6.28
Warning: The magic method __invoke() must have public visibility and cannot be static in /in/Ih9q5 on line 5 Fatal error: Cannot pass parameter 1 by reference in /in/Ih9q5 on line 12
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45
Fatal error: Cannot pass parameter 1 by reference in /in/Ih9q5 on line 12
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/Ih9q5 on line 14 Fatal error: Function name must be a string in /in/Ih9q5 on line 12
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Ih9q5 on line 3
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
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Ih9q5 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/Ih9q5 on line 3
Process exited with code 255.

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