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Digg  quoted_printable_decode
Convert a quoted-printable string to an 8 bit string
(PHP 4, PHP 5)
Code Examples / Notes » quoted_printable_decodethomas
Try the imap_8bit function, for converting an 8bit string to a quotad printable string.
gustavf
This function does not recognize lowercase letters as part of the Quoted Printable encoding. RFC 1521 specifies: Uppercase letters must be used when sending hexadecimal data, though a robust implementation may choose to recognize lowercase letters on receipt. bendi
This function appeared twice already and in both versions it's got error in rule replacing chunk_split, because it misses the last line in encoded text if it's shorter than 73 characters. My solution (got rid of replace_callback) <? function quoted_printable_encode( $sString ) { /*instead of replace_callback i used <b>e</b> modifier for regex rule, which works as eval php function*/ $sString = preg_replace( '/[^\x21-\x3C\x3E-\x7E\x09\x20]/e', 'sprintf( "=%02x", ord ( "$0" ) ) ;', $sString ); /*now added to this rule one or more chars which lets last line to be matched and included in results*/ preg_match_all( '/.{1,73}([^=]{0,3})?/', $sString, $aMatch ); return implode( '=' . CR, $aMatch[0] ); } ?> pinkpanther
Sorry, above I mixed up QP-Decode and UrlDecode, the example I gave above is in fact UrlDecode: function UrlDecode($string) { return preg_replace("/%([0-9A-Fa-f]{2})/e", "chr(hexdec('\\1'))", $string); } f.e. replaces '%3F' with '?' Quoted-printable would be: function qp_decode($string) { return preg_replace("/=([0-9A-F]{2})/e", "chr(hexdec('\\1'))", $string); } f.e. replaces '=20' with ' ' madmax
Some browser (netscape, for example) send 8-bit quoted printable text like this: =C5=DD=A3=D2=C1= =DA "= =" means continuos word. php function not detect this situations and translate in string like: abcde=f dmitry
Previous comment has a bug: encoding of short test does not work because of incorrect usage of preg_match_all(). Have somebody read it at all? :-) Correct version (seems), with additional imap_8bit() function emulation: if (!function_exists('imap_8bit')) { function imap_8bit($text) { return quoted_printable_encode($text); } } function quoted_printable_encode_character ( $matches ) { $character = $matches[0]; return sprintf ( '=%02x', ord ( $character ) ); } // based on http://www.freesoft.org/CIE/RFC/1521/6.htm function quoted_printable_encode ( $string ) { // rule #2, #3 (leaves space and tab characters in tact) $string = preg_replace_callback ( '/[^\x21-\x3C\x3E-\x7E\x09\x20]/', 'quoted_printable_encode_character', $string ); $newline = "=\r\n"; // '=' + CRLF (rule #4) // make sure the splitting of lines does not interfere with escaped characters // (chunk_split fails here) $string = preg_replace ( '/(.{73}[^=]{0,3})/', '$1'.$newline, $string); return $string; } legolas558
Please note that in the below encode function there is a bug! <?php if (($c==0x3d) || ($c>=0x80) || ($c<0x20)) ?> $c should be checked against less or equal to encode spaces! so the correct code is <?php if (($c==0x3d) || ($c>=0x80) || ($c<=0x20)) ?> Fix the code or post this note, please ludwig
my approach for quoted printable encode using the stream converting abilities <?php /** * @param string $str * @return string * */ function quoted_printable_encode($str) { $fp = fopen('php://temp', 'w+'); stream_filter_append($fp, 'convert.quoted-printable-encode'); fwrite($fp, $str); fseek($fp, 0); $result = ''; while(!feof($fp)) $result .= fread($fp, 1024); fclose($fp); return $result; } ?> thomas pequet / memotoo.com
If you want a function to do the reverse of "quoted_printable_decode()", follow the link you will find the "quoted_printable_encode()" function: http://www.memotoo.com/softs/public/PHP/quoted printable_encode.inc.php Compatible "ENCODING=QUOTED-PRINTABLE" Example: quoted_printable_encode(ut8_encode("c'est quand l'été ?")) -> "c'est quand l'=C3=A9t=C3=A9 ?" pob
If you do not have access to imap_* and do not want to use »$message = chunk_split( base64_encode($message) );« because you want to be able to read the »source« of your mails, you might want to try this: (any suggestions very welcome!) function qp_enc($input = "quoted-printable encoding test string", $line_max = 76) { $hex = array('0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'); $lines = preg_split("/(?:\r\n|\r|\n)/", $input); $eol = "\r\n"; $escape = "="; $output = ""; while( list(, $line) = each($lines) ) { //$line = rtrim($line); // remove trailing white space -> no =20\r\n necessary $linlen = strlen($line); $newline = ""; for($i = 0; $i < $linlen; $i++) { $c = substr($line, $i, 1); $dec = ord($c); if ( ($dec == 32) && ($i == ($linlen - 1)) ) { // convert space at eol only $c = "=20"; } elseif ( ($dec == 61) || ($dec < 32 ) || ($dec > 126) ) { // always encode "\t", which is *not* required $h2 = floor($dec/16); $h1 = floor($dec%16); $c = $escape.$hex["$h2"].$hex["$h1"]; } if ( (strlen($newline) + strlen($c)) >= $line_max ) { // CRLF is not counted $output .= $newline.$escape.$eol; // soft line break; " =\r\n" is okay $newline = ""; } $newline .= $c; } // end of for $output .= $newline.$eol; } return trim($output); } $eight_bit = "\xA7 \xC4 \xD6 \xDC \xE4 \xF6 \xFC \xDF = xxx yyy zzz \r\n" ." \xA7 \r \xC4 \n \xD6 \x09 "; print $eight_bit."\r\n---------------\r\n"; $encoded = qp_enc($eight_bit); print $encoded; roelof
I modified the below version of legolas558 at users dot sausafe dot net and added a wrapping option. <?php /** * Codeer een String naar zogenaamde 'quoted printable'. Dit type van coderen wordt * gebruikt om de content van 8 bit e-mail berichten als 7 bits te versturen. * * @access public * @param string $str De String die we coderen * @param bool $wrap Voeg linebreaks toe na 74 tekens? * @return string */ function quoted_printable_encode($str, $wrap=true) { $return = ''; $iL = strlen($str); for($i=0; $i<$iL; $i++) { $char = $str[$i]; if(ctype_print($char) && !ctype_punct($char)) $return .= $char; else $return .= sprintf('=%02X', ord($char)); } return ($wrap === true) ? wordwrap($return, 74, " =\n") : $return; } ?> tamas dot tompa
i have found a bug in pob at medienrecht dot NOSPAM dot org 's qp_enc function. in quoted printable messages need to convert the first pont in the lines too... here is the fixed code: function qp_enc( $input = "", $line_max = 76, $space_conv = false ) { $hex = array('0','1','2','3','4','5','6','7','8','9', 'A','B','C','D','E','F'); $lines = preg_split("/(?:\r\n|\r|\n)/", $input); $eol = "\r\n"; $escape = "="; $output = ""; while( list(, $line) = each($lines) ) { //$line = rtrim($line); // remove trailing white space -> no =20\r\n necessary $linlen = strlen($line); $newline = ""; for($i = 0; $i < $linlen; $i++) { $c = substr( $line, $i, 1 ); $dec = ord( $c ); if ( ( $i == 0 ) && ( $dec == 46 ) ) { // convert first point in the line into =2E $c = "=2E"; } if ( $dec == 32 ) { if ( $i == ( $linlen - 1 ) ) { // convert space at eol only $c = "=20"; } else if ( $space_conv ) { $c = "=20"; } } elseif ( ($dec == 61) || ($dec < 32 ) || ($dec > 126) ) { // always encode "\t", which is *not* required $h2 = floor($dec/16); $h1 = floor($dec%16); $c = $escape.$hex["$h2"].$hex["$h1"]; } if ( (strlen($newline) + strlen($c)) >= $line_max ) { // CRLF is not counted $output .= $newline.$escape.$eol; // soft line break; " =\r\n" is okay $newline = ""; // check if newline first character will be point or not if ( $dec == 46 ) { $c = "=2E"; } } $newline .= $c; } // end of for $output .= $newline.$eol; } // end of while return trim($output); } magicaltux
I checked Thomas Pequet / Memotoo.com's quoted_printable_encode() function, and it's rather non-respective to standards... Here's my own, fixed version : <?php function quoted_printable_encode($string, $linelen = 0, $linebreak="=\r\n", $breaklen = 0, $encodecrlf = false) { // Quoted printable encoding is rather simple. // Each character in the string $string should be encoded if: // Character code is <0x20 (space) // Character is = (as it has a special meaning: 0x3d) // Character is over ASCII range (>=0x80) $len = strlen($string); $result = ''; for($i=0;$i<$len;$i++) { if ($linelen >= 76) { // break lines over 76 characters, and put special QP linebreak $linelen = $breaklen; $result.= $linebreak; } $c = ord($string[$i]); if (($c==0x3d) || ($c>=0x80) || ($c<0x20)) { // in this case, we encode... if ((($c==0x0A) || ($c==0x0D)) && (!$encodecrlf)) { // but not for linebreaks $result.=chr($c); $linelen = 0; continue; } $result.='='.str_pad(strtoupper(dechex($c)), 2, '0'); $linelen += 3; continue; } $result.=chr($c); // normal characters aren't encoded $linelen++; } return $result; } $test = 'This is a test !! héhéhé ....'."\r\n"; $test.= 'You can write really long pieces of text without having to worry about mail transfert. Quoted printable supports special way to handle such lines, by instering an escaped linebreak. This linebreak, once converted back to 8bit, will disappear.'; echo quoted_printable_encode(utf8_encode($test))."\r\n"; ?> By default, the function encodes text to be used as a quoted-printable-encoded body, however by tweaking the parameters, you can get subject-header encoding and stuff like that. sunil
hi. i'm php developer in korean. quoted print decode works well, but <font color=blue>quoted_printable_decode(str_replace("=\r\n","",$string)</font> works better when MIME email decode. MIME mail feeds every 76 char (maybe). and feeding line tlanslate "=\r\n" so, it better that use <font color=blue>quoted_printable_decode(str_replace("=\r\n","",$line)</font> when quoted printable MIME decoding. I test under php3.0.11,.. soletan
Be warned! The method below for encoding text does not work as requested by RFC1521! Consider a line consisting of 75 'A' and a single é (or similar non-ASCII character) ... the method below would encode and return a line of 78 octets, breaking with RFC 1521, 5.1 Rule #5: "The Quoted-Printable encoding REQUIRES that encoded lines be no more than 76 characters long." Good QP-encoding takes a bit more than this. steffen dot weber
As the two digit hexadecimal representation SHOULD be in uppercase you want to use "=%02X" (uppercase X) instead of "=%02x" as the first argument to sprintf().
legolas558
As soletan at toxa dot de reported, that function is very bad and does not provide valid enquoted printable strings. While using it I saw spam agents marking the emails as QP_EXCESS and sometimes the email client did not recognize the header at all; I really lost time :(. This is the new version (we use it in the Drake CMS core) that works seamlessly: <?php //L: note $encoding that is uppercase //L: also your PHP installation must have ctype_alpha, otherwise write it yourself function quoted_printable_encode($string, $encoding='UTF-8') { // use this function with headers, not with the email body as it misses word wrapping $len = strlen($string); $result = ''; $enc = false; for($i=0;$i<$len;++$i) { $c = $string[$i]; if (ctype_alpha($c)) $result.=$c; else if ($c==' ') { $result.='_'; $enc = true; } else { $result.=sprintf("=%02X", ord($c)); $enc = true; } } //L: so spam agents won't mark your email with QP_EXCESS if (!$enc) return $string; return '=?'.$encoding.'?q?'.$result.'?='; } I hope it helps ;) ?> drm
A easier, improved way of encoding for quoted-printable transfer: ------ function quoted_printable_encode_character ( $matches ) { $character = end ( $matches ); return sprintf ( '=%02x', ord ( $character ) ); } // based on http://www.freesoft.org/CIE/RFC/1521/6.htm function quoted_printable_encode ( $string ) { // rule #2, #3 (leaves space and tab characters in tact) $string = preg_replace_callback ( '/[^\x21-\x3C\x3E-\x7E\x09\x20]/', 'quoted_printable_encode_character', $string ); $newline = "=\r\n"; // '=' + CRLF (rule #4) // make sure the splitting of lines does not interfere with escaped characters // (chunk_split fails here) preg_match_all ( '/.{73}([^=]{0,3})/', $string, $match ); // Rule #1 return implode ( $newline, $match[0] ); } ----- umu
...deed.ztinmehc-ut.zrh@umuumu@hrz.tu-chemnitz.deed... and write [^=]{0,2} in the last regular expression to avoid the soft linebreak "=" being the 77th char in line, see my imap_8bit() emulation at http://www.php.net/manual/en/function.imap-8bit.php#61216 |
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addcslashes addslashes bin2hex chop chr chunk_split convert_cyr_string convert_uudecode convert_uuencode count_chars crc32 crypt echo explode fprintf get_html_translation_table hebrev hebrevc html_entity_decode htmlentities htmlspecialchars_decode htmlspecialchars implode join levenshtein localeconv ltrim md5_file md5 metaphone money_format nl_langinfo nl2br number_format ord parse_str printf quoted_printable_decode quotemeta rtrim setlocale sha1_file sha1 similar_text soundex sprintf sscanf str_getcsv str_ireplace str_pad str_repeat str_replace str_rot13 str_shuffle str_split str_word_count strcasecmp strchr strcmp strcoll strcspn strip_tags stripcslashes stripos stripslashes stristr strlen strnatcasecmp strnatcmp strncasecmp strncmp strpbrk strpos strrchr strrev strripos strrpos strspn strstr strtok strtolower strtoupper strtr substr_compare substr_count substr_replace substr trim ucfirst ucwords vfprintf vprintf vsprintf wordwrap |
