3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(mb_strwidth("👨‍👩‍👦", "UTF-8"));
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(8)
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30
int(5)
preferences:
125.85 ms | 402 KiB | 121 Q