3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class prototype { private $inherited; private $instance; public function __construct(prototype $prototype = null) { $this->inherited = $prototype; $this->instance = []; } public function __set($name, $value) { if ($value instanceof \Closure) { $value = $value->bindTo($this); } $this->instance[$name] = $value; } public function __get($name) { if (array_key_exists($name, $this->instance)) { return $this->instance[$name]; } else { return $this->inherited->$name; } } public function __call($name, $arguments) { if (!isset($this->instance[$name]) && isset($this->inherited) && ($fromProto = $this->inherited->$name) instanceof \Closure) { $target = $fromProto->bindTo($this); } else if (isset($this->instance[$name]) && $this->instance[$name] instanceof \Closure) { $target = $this->instance[$name]; } else { return; } return call_user_func_array($target, $arguments); } } $foo = new prototype; $foo->foo = 'Foo!'; $foo->bar = function() { return $this->foo; }; $bar = new prototype($foo); $bar->foo = 'Bar!'; echo $foo->bar() . "\n"; echo $bar->bar() . "\n"; $foo->bar = function() { return "Baz!"; }; echo $foo->bar() . "\n"; echo $bar->bar() . "\n";
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Foo! Bar! Baz! Baz!
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/f9BtY on line 12
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/f9BtY on line 12
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/f9BtY on line 5
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/f9BtY 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/f9BtY on line 5
Process exited with code 255.