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<?php /* Challenge 1: Modify Test::$secret before it's output. Rules:: 1. No use of Reflection API / runkit extension 2. No stopping execution before Test::run() 3. No Exceptions or PHP errors / warnings notices allowed Hints: 1. Caesar 2. Magic methods 3. Requires a new feature of PHP 5.4 */ 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} = $value; } } class TestM extends Test { public function foo(&$obj){ $obj->secret = "HELLO WORLD"; } } $test = new Test; // start editing here $testM = new TestM; $testM->foo($test); // end editing here echo $test->run();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /in/AReH4:33 Stack trace: #0 /in/AReH4(43): Test->__set('secret', 'HELLO WORLD') #1 /in/AReH4(55): TestM->foo(Object(Test)) #2 {main} thrown in /in/AReH4 on line 33
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Illegal string offset 'HELLO WORLD' in /in/AReH4 on line 33 Warning: Illegal string offset 'H' in /in/AReH4 on line 33 Fatal error: Uncaught Error: Call to undefined function HELLO WORLD() in /in/AReH4:34 Stack trace: #0 /in/AReH4(43): Test->__set('secret', 'HELLO WORLD') #1 /in/AReH4(55): TestM->foo(Object(Test)) #2 {main} thrown in /in/AReH4 on line 34
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Warning: Illegal string offset 'HELLO WORLD' in /in/AReH4 on line 33 Warning: Illegal string offset 'H' in /in/AReH4 on line 33 Fatal error: Call to undefined function HELLO WORLD() in /in/AReH4 on line 34
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Fatal error: Call to undefined function HELLO WORLD() in /in/AReH4 on line 34
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Cannot access private property Test::$secret in /in/AReH4 on line 43
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/AReH4 on line 21
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/AReH4 on line 21
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/AReH4 on line 21
Process exited with code 255.
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