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<?php $x = function($m){ return eval('$this->waa();'); }; class x { function __construct($x){ var_dump(preg_replace_callback('~.~', $x, 'wazaa')); } function waa(){ return 'meukee'; } } new x($x);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Fatal error: Uncaught Error: Using $this when not in object context in /in/RkOdk(3) : eval()'d code:1 Stack trace: #0 /in/RkOdk(3): eval() #1 [internal function]: {closure}(Array) #2 /in/RkOdk(7): preg_replace_callback('~.~', Object(Closure), 'wazaa') #3 /in/RkOdk(11): x->__construct(Object(Closure)) #4 {main} thrown in /in/RkOdk(3) : eval()'d code on line 1
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Using $this when not in object context in /in/RkOdk(3) : eval()'d code on line 1
Process exited with code 255.

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