3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class Foo { var $_instNum; function __construct() { static $i = 0; $this->_instNum = $i++; $GLOBALS["_fooInst$i"] = $this; eval("function _invokeFoo$i() { return call_user_func_array(array(\$GLOBALS['_fooInst$i'], '__invoke'), func_get_args()); }"); } function __invoke() { return 'goal!'; } function __toString() { $funcName = ('_hack' . $n++); } } $foo = new Foo; echo call_user_func($foo);
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
goal!
Output for 5.2.0 - 5.2.17
Notice: Undefined variable: n in /in/aspML on line 15 Catchable fatal error: Method Foo::__toString() must return a string value in /in/aspML on line 21
Process exited with code 255.
Output for 5.1.3 - 5.1.6
Notice: Object of class Foo to string conversion in /in/aspML on line 21 Warning: call_user_func(Object): First argument is expected to be a valid callback in /in/aspML on line 21
Output for 5.0.0 - 5.1.2
Strict Standards: var: Deprecated. Please use the public/private/protected modifiers in /in/aspML on line 3 Notice: Object of class Foo to string conversion in /in/aspML on line 21 Warning: call_user_func(Object): First argument is expected to be a valid callback in /in/aspML on line 21
Output for 4.3.2 - 4.4.9
Notice: Object to string conversion in /in/aspML on line 21 Warning: call_user_func(Object): First argument is expected to be a valid callback in /in/aspML on line 21
Output for 4.3.0 - 4.3.1
Notice: Object to string conversion in /in/aspML on line 21 Warning: call_user_func(Object) [http://www.php.net/function.call-user-func]: First argument is expected to be a valid callback in /in/aspML on line 21