note 71211 added to function.urldecode

The following function will decode %uXXXX sequentially, without temporary data. <?php function decode_unicode_url($str) { $res = ''; $i = 0; $max = strlen($str) - 6; while ($i <= $max) { $character = $str[$i]; if ($character == '%' && $str[$i + 1] == 'u') { $value = hexdec(substr($str, $i + 2, 4)); $i += 6; if ($value < 0x0080) // 1 byte: 0xxxxxxx $character = chr($value); else if ($value < 0x0800) // 2 bytes: 110xxxxx 10xxxxxx $character = chr((($value & 0x07c0) >> 6) | 0xc0) . chr(($value & 0x3f) | 0x80); else // 3 bytes: 1110xxxx 10xxxxxx 10xxxxxx $character = chr((($value & 0xf000) >> 12) | 0xe0) . chr((($value & 0x0fc0) >> 6) | 0x80) . chr(($value & 0x3f) | 0x80); } else $i++; $res .= $character; } return $res . substr($str, $i); } ?> Simple test with japanese characters, combined with urldecode: <?php $str = decode_unicode_url('%u65E5%u672C%u8A9E'); print(mb_convert_encoding(urldecode($str), "sjis", "euc-jp, utf-8, sjis") . '<br/>'); ?> ---- Server IP: 194.246.101.61 Probable Submitter: 81.56.13.114 ---- Manual Page -- http://www.php.net/manual/en/function.urldecode.php Edit -- https://master.php.net/note/edit/71211 Del: integrated -- https://master.php.net/note/delete/71211/integrated Del: useless -- https://master.php.net/note/delete/71211/useless Del: bad code -- https://master.php.net/note/delete/71211/bad+code Del: spam -- https://master.php.net/note/delete/71211/spam Del: non-english -- https://master.php.net/note/delete/71211/non-english Del: in docs -- https://master.php.net/note/delete/71211/in+docs Del: other reasons-- https://master.php.net/note/delete/71211 Reject -- https://master.php.net/note/reject/71211 Search -- https://master.php.net/manage/user-notes.php