3v4l.org

run code in 300+ PHP versions simultaneously
<?php trait T1 { function a1() { return $this->var; } } trait T2 { use T1; function a2() { return $this->a1(); } } class A { use T2; private $var = 3; } $a = new A; echo $a->a2();
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.5 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.20, 8.3.0 - 8.3.8
3

preferences:
146.03 ms | 404 KiB | 209 Q