3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo mb_detect_encoding(html_entity_decode('&nbsp;&#xFEF8;',0,'UTF-8'),['UTF-8','ISO-8859-15']);
Output for 8.1.7 - 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
ISO-8859-15
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.6
UTF-8
preferences:
67.51 ms | 1240 KiB | 4 Q