3v4l.org

run code in 500+ PHP versions simultaneously
<?php echo mb_detect_encoding('abc', 'UTF8, ASCII');
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
UTF-8
preferences:
53.01 ms | 1009 KiB | 4 Q