3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo mb_detect_encoding('abc', 'UTF8, ASCII');
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
UTF-8
preferences:
58.61 ms | 972 KiB | 4 Q