3v4l.org

run code in 500+ PHP versions simultaneously
<?php var_dump(mb_strlen(hex2bin("80a0a1ef"), "SJIS"));
Output for 8.1.15 - 8.1.34, 8.2.2 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
int(4)
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.14, 8.2.0 - 8.2.1
int(3)
preferences:
31.32 ms | 1146 KiB | 13 Q