note 48158 added to function.utf8-encode

// Validate Unicode UTF-8 Version 4 // This function takes as reference the table 3.6 found at http://www.unicode.org/versions/Unicode4.0.0/ch03.pdf // It also flags overlong bytes as error function is_validUTF8($str) { // values of -1 represent disalloweded values for the first bytes in current UTF-8 static $trailing_bytes = array ( 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, -1,-1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 ); $ups = unpack('C*', $str); if (!($aCnt = count($ups))) return true; // Empty string *is* valid UTF-8 for ($i = 1; $i <= $aCnt;) { if (!($tbytes = $trailing_bytes[($b1 = $ups[$i++])])) continue; if ($tbytes == -1) return false; $first = true; while ($tbytes > 0 && $i <= $aCnt) { $cbyte = $ups[$i++]; if (($cbyte & 0xC0) != 0x80) return false; if ($first) { switch ($cbyte) { case 0xE0: if ($cbyte < 0xA0) return false; break; case 0xED: if ($cbyte > 0x9F) return false; break; case 0xF0: if ($cbyte < 0x90) return false; break; case 0xF4: if ($cbyte > 0x8F) return false; break; default: break; } $first = false; $tbytes--; } } if ($tbytes) return false; // incomplete sequence at EOS } return true; } ---- Manual Page -- http://www.php.net/manual/en/function.utf8-encode.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+48158 Delete -- http://master.php.net/manage/user-notes.php?action=delete+48158&report=yes Reason: bad code -- http://master.php.net/manage/user-notes.php?action=delete+48158&report=yes&reason=bad+code Reason: spam -- http://master.php.net/manage/user-notes.php?action=delete+48158&report=yes&reason=spam Reason: useless example -- http://master.php.net/manage/user-notes.php?action=delete+48158&report=yes&reason=useless+example Reason: contains commercial links -- http://master.php.net/manage/user-notes.php?action=delete+48158&report=yes&reason=contains+commercial+links Reason: useless note -- http://master.php.net/manage/user-notes.php?action=delete+48158&report=yes&reason=useless+note Reject -- http://master.php.net/manage/user-notes.php?action=reject+48158&report=yes Search -- http://master.php.net/manage/user-notes.php