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<?php function a() { return function() { return get_called_class(); }; } class A { protected $a; public function foo() { $f = function() { echo a(); }; $f(); } } $a = new A; $a->foo();
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Object of class Closure could not be converted to string in /in/Wsuo8:11 Stack trace: #0 /in/Wsuo8(14): A->{closure}() #1 /in/Wsuo8(19): A->foo() #2 {main} thrown in /in/Wsuo8 on line 11
Process exited with code 255.
Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Recoverable fatal error: Object of class Closure could not be converted to string in /in/Wsuo8 on line 11
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20
Catchable fatal error: Object of class Closure could not be converted to string in /in/Wsuo8 on line 11
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/Wsuo8 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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/Wsuo8 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Wsuo8 on line 3
Process exited with code 255.

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