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<?php class A { public function x($i) { return $i; } public function abc() { return array_map(function($i) { return $$this->x($i); }, [1,2,3]); } } $a = new A(); var_dump($a->abc());
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Object of class A could not be converted to string in /in/NJNPe:11 Stack trace: #0 [internal function]: A->{closure}(1) #1 /in/NJNPe(10): array_map(Object(Closure), Array) #2 /in/NJNPe(17): A->abc() #3 {main} thrown in /in/NJNPe on line 11
Process exited with code 255.
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Fatal error: Uncaught Error: Object of class A could not be converted to string in /in/NJNPe:11 Stack trace: #0 [internal function]: A->{closure}(1) #1 /in/NJNPe(12): array_map(Object(Closure), Array) #2 /in/NJNPe(17): A->abc() #3 {main} thrown in /in/NJNPe on line 11
Process exited with code 255.
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33
Recoverable fatal error: Object of class A could not be converted to string in /in/NJNPe on line 11
Process exited with code 255.
Output for 5.4.1 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20
Catchable fatal error: Object of class A could not be converted to string in /in/NJNPe on line 11
Process exited with code 255.

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