3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(1 ** "+1 \n"); var_dump(1 ** '-1.0e0');
Output for 8.1.28, 8.2.17 - 8.2.19, 8.3.4 - 8.3.7
int(1) float(1)
preferences:
31.27 ms | 402 KiB | 13 Q