3v4l.org

run code in 300+ PHP versions simultaneously
<?php abstract class A { public abstract function f(); } class B extends A { public function f(){ echo 'f' } } $b=new B();
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.21
Parse error: syntax error, unexpected '}', expecting ',' or ';' in /in/b2ChI on line 10
Process exited with code 255.
preferences:
185.89 ms | 1395 KiB | 57 Q