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<?php class x { static function a() { // display the current class echo __METHOD__; } static function b($method) { // display the current class with method a above call_user_func($method); $method(); } } (new x)->b(array('self', 'a')); ?>
Output for 8.0.0 - 8.0.12, 8.1rc1 - rc3
x::a Fatal error: Uncaught Error: Class "self" not found in /in/0eacu:12 Stack trace: #0 /in/0eacu(16): x::b(Array) #1 {main} thrown in /in/0eacu on line 12
Process exited with code 255.
Output for 7.0.33, 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25
x::a Fatal error: Uncaught Error: Class 'self' not found in /in/0eacu:12 Stack trace: #0 /in/0eacu(16): x::b(Array) #1 {main} thrown in /in/0eacu on line 12
Process exited with code 255.
Output for 5.6.38
x::a Fatal error: Class 'self' not found in /in/0eacu on line 12
Process exited with code 255.

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