3v4l.org

run code in 500+ PHP versions simultaneously
<?php class Some {} class_alias(Some::class, '_');
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35
Output for 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
Deprecated: Using "_" as a class alias is deprecated since 8.4 in /in/QEcZs on line 5
preferences:
30.79 ms | 1139 KiB | 9 Q