3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(mb_strwidth("👨‍👩‍👦", "UTF-8"));
Output for 8.1.0 - 8.1.13, 8.2rc1 - rc3
int(8)
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.26
int(5)

preferences:
42.19 ms | 410 KiB | 5 Q