3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace A; function Hello() { echo __NAMESPACE__; } namespace B; function Hello() { echo __NAMESPACE__; } namespace C; \B\Hello();
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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 - 8.2.26, 8.3.0 - 8.3.14, 8.4.1
B
preferences:
71.09 ms | 407 KiB | 5 Q