3v4l.org

run code in 300+ PHP versions simultaneously
<?php class C { public function f ( $foo ) { var_dump($foo instanceof __CLASS__); } } class D extends C { } $c = new C(); $c->f(new D()); $d = new D(); $d->f($d); $d->f($c);
Output for 5.4.0 - 5.4.20
Parse error: syntax error, unexpected '__CLASS__' (T_CLASS_C) in /in/OpVDv on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_CLASS_C in /in/OpVDv on line 7
Process exited with code 255.
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169.41 ms | 1395 KiB | 56 Q