3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_export((fn(): float => '1.5')());
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
1.5

preferences:
78.7 ms | 402 KiB | 62 Q