3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class Container { public function getObject() { $this->object = new StringableObject(); return $this->object; } // This destructor is required to exist to trigger the segfault public function __destruct() { } } class StringableObject { public function __toString() { $this->test = $this; return 'test123'; } } $container = new Container(); $object = $container->getObject(); // Any kind of function which triggers a 'to string' object conversion // Casting $object with (string) will circumvent the problem echo trim($object); // Another call is required to corrupt heap echo trim('test');
Output for 5.2.0 - 5.2.17, 5.3.11 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
test123test
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.3.0 - 5.3.10
test123test
Process exited with code 139.
Output for 5.0.0 - 5.1.6
Notice: Object of class StringableObject to string conversion in /in/MbW5b on line 32 Objecttest
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/MbW5b on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/MbW5b on line 4
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/MbW5b on line 4
Process exited with code 255.