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<?php $array['test'] = function () {echo'1';}; $array['test']->call($this);
Output for 7.1.0 - 7.1.33, 7.2.5 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Using $this when not in object context in /in/tYZQM:4 Stack trace: #0 {main} thrown in /in/tYZQM on line 4
Process exited with code 255.
Output for 7.0.0 - 7.0.20
Notice: Undefined variable: this in /in/tYZQM on line 4 Warning: Closure::call() expects parameter 1 to be object, null given in /in/tYZQM on line 4

preferences:
172.73 ms | 401 KiB | 198 Q