3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(pow(3, 1/3), pow(3, 2/3), pow(3, 3/3), pow(3, 4/3), pow(3, 5/3), pow(3, 6/3), pow(3, 7/3), pow(3, 8/3), pow(3, 9/3));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
float(1.4422495703074083) float(2.080083823051904) int(3) float(4.3267487109222245) float(6.240251469155713) int(9) float(12.980246132766677) float(18.720754407467133) int(27)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
float(1.4422495703074) float(2.0800838230519) int(3) float(4.3267487109222) float(6.2402514691557) int(9) float(12.980246132767) float(18.720754407467) int(27)

preferences:
223.89 ms | 405 KiB | 357 Q