note 50087 added to function.mb-detect-encoding

Much simpler UTF-8-ness checker using a regular expression created by the W3C: <?php // Returns true if $string is valid UTF-8 and false otherwise. function is_utf8($string) { // From http://w3.org/International/questions/qa-forms-utf-8.html return preg_match('%^(?: [\x09\x0A\x0D\x20-\x7E] # ASCII | [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte | \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte | \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates | \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3 | [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15 | \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16 )*$%xs', $string); } // function is_utf8 ?> ---- Manual Page -- http://www.php.net/manual/en/function.mb-detect-encoding.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+50087 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+50087&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+50087&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+50087&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+50087&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+50087&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+50087&report=yes Search -- http://master.php.net/manage/user-notes.php