note 80224 added to function.rawurlencode

<?php /* :: Latin characters issue using rawurldecode() :: ------------------------------------------ What happen if you need tu convert this %C3%B1 into this 'ñ' using rawurldecode()? Well, it doesn't work as we'd wish to. We'll get this "ñ". To fix this issue, I've made the following function: */ function urlRawDecode($raw_url_encoded) { # Hex conversion table $hex_table = array( 0 => 0x00, 1 => 0x01, 2 => 0x02, 3 => 0x03, 4 => 0x04, 5 => 0x05, 6 => 0x06, 7 => 0x07, 8 => 0x08, 9 => 0x09, "A"=> 0x0a, "B"=> 0x0b, "C"=> 0x0c, "D"=> 0x0d, "E"=> 0x0e, "F"=> 0x0f ); # Looking for latin characters with a pattern like this %C3%[A-Z0-9]{2} ie. -> %C3%B1 = 'ñ' if(preg_match_all("/\%C3\%([A-Z0-9]{2})/i",$raw_url_encoded,$res)) { $res = array_unique($res = $res[1]); $arr_unicoded = array(); foreach($res as $key => $value){ $arr_unicoded[] = chr( (0xc0 | ($hex_table[substr($value,0,1)]<<4)) | (0x03 & $hex_table[substr($value,1,1)]) ); $res[$key] = "%C3%" . $value; } $raw_url_encoded = str_replace($res,$arr_unicoded,$raw_url_encoded); } # Return raw url decoded return rawurldecode($raw_url_encoded); } # Testing print "Decoded character -> " . urlRawDecode("%C3%B1"); // ouput: // Decoded chracter -> ñ /* :: A little explanation about what does this function do :: ----------------------------------------------------- This function makes two binary operations between C3 and B1. To get an ASCII representation of this kind of raw url encoded character, we have to make a logical OR between HIGH nibble of 0xC3 (0xC) and HIGH nibble of 0xB1 (0xB) -> (0xC0 | 0xB0), then, a logical AND between both LOW nibble (0x03 & 0x01), and finally we have to make a logical OR between these two results -> [hex] ((0xC0 | 0xB0) | (0x03 & 0x01)) = [binary] ((1100 0000 | 1011 0000) | (0000 0011 & 0000 0001)) = [hex] 0xF1 = [binary] 1111 0001 = "ñ" character. Hope to be helpfull, if you have an issue like this, try to use this function. Bye, Javi =) */ ?> ---- Server IP: 190.2.55.3 Probable Submitter: 190.51.87.240 ---- Manual Page -- http://www.php.net/manual/en/function.rawurlencode.php Edit -- https://master.php.net/note/edit/80224 Del: integrated -- https://master.php.net/note/delete/80224/integrated Del: useless -- https://master.php.net/note/delete/80224/useless Del: bad code -- https://master.php.net/note/delete/80224/bad+code Del: spam -- https://master.php.net/note/delete/80224/spam Del: non-english -- https://master.php.net/note/delete/80224/non-english Del: in docs -- https://master.php.net/note/delete/80224/in+docs Del: other reasons-- https://master.php.net/note/delete/80224 Reject -- https://master.php.net/note/reject/80224 Search -- https://master.php.net/manage/user-notes.php