Online PHP editor | output for psmZ4

<?php class Caller { public function overwritten() { echo 'Overwriting from ' . __CLASS__ . PHP_EOL; } public static function call() { echo 'Calling from ' . __CLASS__ . PHP_EOL; } } class StaticCaller extends Caller { public function overwritten() { echo 'Overwriting from ' . __CLASS__ . PHP_EOL; } public function staticCall() { static::call(); static::overwritten(); } } class SelfCaller extends Caller { public function overwritten() { echo 'Overwriting from ' . __CLASS__ . PHP_EOL; } public function selfCall() { self::call(); self::overwritten(); } } class ThisCaller extends Caller { public function overwritten() { echo 'Overwriting from ' . __CLASS__ . PHP_EOL; } public function thisCall() { $this->call(); $this->overwritten(); } } $staticCaller = new StaticCaller(); $selfCaller = new SelfCaller(); $thisCaller = new ThisCaller(); $staticCaller->staticCall(); $selfCaller->selfCall(); $thisCaller->thisCall();