3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(E_ALL); class A { private function b(){ echo 'hello'; } public function c(){ $this::b(); } } $a = new A(); $a->c();
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.16, 8.4.1 - 8.4.3
hello
preferences:
130.86 ms | 408 KiB | 5 Q