3v4l.org

run code in 500+ PHP versions simultaneously
<?php trait A{ public function a(){} } trait B{ use A; } trait C{ use A; } class D{ // use B, C; // Fatal error: Trait method a has not been applied, because there are collisions with other trait methods on D }
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.7

preferences:
69.28 ms | 1673 KiB | 4 Q