3v4l.org

run code in 500+ PHP versions simultaneously
<?php class Some {} class_alias(Some::class, '_');
Output for 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
Deprecated: Using "_" as a class alias is deprecated since 8.4 in /in/QEcZs on line 5
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31

preferences:
74 ms | 1015 KiB | 4 Q