3v4l.org

run code in 300+ PHP versions simultaneously
<?php unset($this); class Foo{ protected $a = true; public function __construct(){ echo "From Foo()"; } public static function init(){ $this = new Foo; echo $this->a; echo "From Foo::init()"; } } Foo::init();
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.32
Fatal error: Cannot re-assign $this in /in/WcDsc on line 9
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/WcDsc on line 4
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/WcDsc 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/WcDsc on line 4
Process exited with code 255.

preferences:
212.28 ms | 1386 KiB | 123 Q