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<?php interface proxy {} class finalfoo { public function __construct() { if (is_subclass_of($this, __CLASS__, false)) { throw new \Exception('Nein! Class is final!'); } } } class fooproxy extends finalfoo implements proxy { } class naughtyfoo { } new finalfoo; new fooproxy; new naughtyfoo;
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Exception: Nein! Class is final! in /in/SpQ6B:10 Stack trace: #0 /in/SpQ6B(26): finalfoo->__construct() #1 {main} thrown in /in/SpQ6B on line 10
Process exited with code 255.
Output for 5.3.19 - 5.6.21
Fatal error: Uncaught exception 'Exception' with message 'Nein! Class is final!' in /in/SpQ6B:10 Stack trace: #0 /in/SpQ6B(26): finalfoo->__construct() #1 {main} thrown in /in/SpQ6B on line 10
Process exited with code 255.