3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(ctype_alnum("æøsads")); // false var_dump(ctype_alnum("123asd")); // true
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
bool(false) bool(true)
preferences:
179.93 ms | 403 KiB | 226 Q