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<?php class Test { private $secret = 'Nyy lbhe Onfr ner orybat gb hf.'; private $callback; final public function run() { call_user_func($this->callback); return $this->secret . PHP_EOL; } public function __set($k, $v) { $key = $v[($v[$v])]; // $v is some kind of weird array $value = $v(); // and a callback! $this->{$key} = $value; } } $test = new Test; // start editing here $test->callback = '13'; // end editing here echo $test->run();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Uninitialized string offset 13 in /in/YiOlu on line 17 Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /in/YiOlu:17 Stack trace: #0 /in/YiOlu(29): Test->__set('callback', '13') #1 {main} thrown in /in/YiOlu on line 17
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.33
Notice: Uninitialized string offset: 13 in /in/YiOlu on line 17 Warning: Illegal string offset '' in /in/YiOlu on line 17 Fatal error: Uncaught Error: Call to undefined function 13() in /in/YiOlu:18 Stack trace: #0 /in/YiOlu(29): Test->__set('callback', '13') #1 {main} thrown in /in/YiOlu on line 18
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Warning: Illegal string offset '' in /in/YiOlu on line 17 Fatal error: Uncaught Error: Call to undefined function 13() in /in/YiOlu:18 Stack trace: #0 /in/YiOlu(29): Test->__set('callback', '13') #1 {main} thrown in /in/YiOlu on line 18
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Notice: Uninitialized string offset: 13 in /in/YiOlu on line 17 Warning: Illegal string offset '' in /in/YiOlu on line 17 Fatal error: Call to undefined function 13() in /in/YiOlu on line 18
Process exited with code 255.
Output for 5.2.10 - 5.2.17, 5.3.0 - 5.3.29
Notice: Uninitialized string offset: 13 in /in/YiOlu on line 17 Fatal error: Call to undefined function 13() in /in/YiOlu on line 18
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.9
Notice: Uninitialized string offset: 13 in /in/YiOlu on line 17 Fatal error: Call to undefined function 13() in /in/YiOlu on line 18
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Cannot access private property Test::$callback in /in/YiOlu on line 29
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/YiOlu on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/YiOlu on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/YiOlu on line 5
Process exited with code 255.

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