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<?php class y { static function a() { // display the current class echo __METHOD__; } } class x extends y { static function b($method) { // display the current class with method a above call_user_func($method); $method(); } } (new x)->b(array('parent', 'a')); ?>
Output for 8.0.0 - 8.0.12, 8.1rc1 - rc3
y::a Fatal error: Uncaught Error: Class "parent" not found in /in/HkFmd:16 Stack trace: #0 /in/HkFmd(20): x::b(Array) #1 {main} thrown in /in/HkFmd on line 16
Process exited with code 255.
Output for 7.0.33, 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25
y::a Fatal error: Uncaught Error: Class 'parent' not found in /in/HkFmd:16 Stack trace: #0 /in/HkFmd(20): x::b(Array) #1 {main} thrown in /in/HkFmd on line 16
Process exited with code 255.
Output for 5.6.38
y::a Fatal error: Class 'parent' not found in /in/HkFmd on line 16
Process exited with code 255.

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