3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = 'űáéúüó&'; $d = htmlentities($s); var_dump(mb_detect_encoding($s)); var_dump(mb_detect_encoding($d), $d);
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 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 - 8.3.6
string(5) "UTF-8" string(5) "UTF-8" string(45) "ű&aacute;&eacute;&uacute;&uuml;&oacute;&amp;"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
string(5) "UTF-8" string(5) "ASCII" string(93) "&Aring;&plusmn;&Atilde;&iexcl;&Atilde;&copy;&Atilde;&ordm;&Atilde;&frac14;&Atilde;&sup3;&amp;"
preferences:
216.16 ms | 403 KiB | 395 Q