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Digg  mb_encode_mimeheader
Encode string for MIME header
(PHP 4 >= 4.0.6, PHP 5)
Example 1399. mb_encode_mimeheader() example<?phpCode Examples / Notes » mb_encode_mimeheadernigrez
True, function is broken (PHP5.1, encoding from UTF-8 with pl_PL charset). Below is about 15% faster version of proposed _mb_mime_encode. Also it has header more like othe mb_* functions and doesn't trigger any errors/warnings/notices. <?php function mb_mime_header($string, $encoding=null, $linefeed="\r\n") { if(!$encoding) $encoding = mb_internal_encoding(); $encoded = ''; while($length = mb_strlen($string)) { $encoded .= "=?$encoding?B?" . base64_encode(mb_substr($string,0,24,$encoding)) . "?=$linefeed"; $string = mb_substr($string,24,$length,$encoding); } return $encoded; } ?> stormflycut
Some solution for using national chars and have problem with UTF-8 for example in mail subject. Before you use mb_encode_mimeheader with UTF-8 set mb_internal_encoding('UTF-8').
masataka
second parameter 'charset' is character encoding name, but default must be UTF-8 on PHP4.3.1.
gullevek
Read this FIRST: http://bugs.php.net/bug.php?id=23192 because mb_encode_mimeheaders is BUGGY! a work around for the multibyte broken error for too long subjects for ISO-2022-JP: $pos=0; $split=36; // after 36 single bytes characters, if then comes MB, it is broken while ($pos<mb_strlen($string,$encoding)) { $output=mb_strimwidth($string,$pos,$split,"",$encoding); $pos+=mb_strlen($output,$encoding); $_string.=(($_string)?' ':'').mb_encode_mimeheader($output,$encoding); } $string=$_string; is not the best, but it works chappy
In countries where there's non-us ASCII, it's a very good example, for sending mail: mb_internal_encoding('iso-8859-2'); setlocale(LC_CTYPE, 'hu_HU'); function encode($str,$charset){ $str=mb_encode_mimeheader(trim($str),$charset, 'Q', "\n\t"); return $str; } print encode('the text with spec. chars: ő Ű Ő ű, á','iso-8859-2'); It creates a 7bit string paravoid
If mb_ version doesn't work for you in MIME-B mode: function encode_mimeheader($string, $charset=null, $linefeed="\r\n") { if (!$charset) $charset = mb_internal_encoding(); $start = "=?$charset?B?"; $end = "?="; $encoded = ''; /* Each line must have length <= 75, including $start and $end */ $length = 75 - strlen($start) - strlen($end); /* Average multi-byte ratio */ $ratio = mb_strlen($string, $charset) / strlen($string); /* Base64 has a 4:3 ratio */ $magic = $avglength = floor(3 * $length * $ratio / 4); for ($i=0; $i <= mb_strlen($string, $charset); $i+=$magic) { $magic = $avglength; $offset = 0; /* Recalculate magic for each line to be 100% sure */ do { $magic -= $offset; $chunk = mb_substr($string, $i, $magic, $charset); $chunk = base64_encode($chunk); $offset++; } while (strlen($chunk) > $length); if ($chunk) $encoded .= ' '.$start.$chunk.$end.$linefeed; } /* Chomp the first space and the last linefeed */ $encoded = substr($encoded, 1, -strlen($linefeed)); return $encoded; } iwakura
i think mb_encode_mimeheader still have bug. here is sample code: function mb_encode_mimeheader2($string, $encoding = "ISO-2022-JP") { $string_array = array(); $pos = 0; $row = 0; $mode = 0; while ($pos < mb_strlen($string)) { $word = mb_strimwidth($string, $pos, 1); if (!$word) { $word = mb_strimwidth($string, $pos, 2); } if (mb_ereg_match("[ -~]", $word)) { // ascii if ($mode != 1) { $row++; $mode = 1; $string_array[$row] = NULL; } } else { // multibyte if ($mode != 2) { $row++; $mode = 2; $string_array[$row] = NULL; } } $string_array[$row] .= $word; $pos++; } //echo "<pre>"; //print_r($string_array); //echo "</pre>"; foreach ($string_array as $key => $value) { $value = mb_convert_encoding($value, $encoding); $string_array[$key] = mb_encode_mimeheader($value, $encoding); } //echo "<pre>"; //print_r($string_array); //echo "</pre>"; return implode("", $string_array); } is not the best, but it works chappy
I found a bad function. <?php function encodeHeader($input, $charset = 'ISO-8859-2') { preg_match_all('/(\\w*[\\x80-\\xFF]+\\w*)/', $input, $matches); foreach ($matches[1] as $value) { $replacement = preg_replace('/([\\x80-\\xFF])/e', '"=" . strtoupper(dechex(ord("\\1")))', $value); $input = str_replace($value, '=?' . $charset . '?Q?' . $replacement . '?=', $input); } return $input; } ?> This function should be used: <?php function encodeHeader($input, $charset = 'ISO-8859-2') { $m=preg_match_all('/(\w*[\x80-\xFF]+\w*)/', $input, $matches); if($m)$input=mb_encode_mimeheader($input,$charset, 'Q'); return $input; } ?> mortoray
At least for Q encoding, this function is unsafe and does not encode correctly. Raw characters which appear as RFC2047 sequences are simply left as is. Ex: mb_encode_mimeheader( '=?iso-8859-1?q?this=20is=20some=20text?=' ); returns '=?iso-8859-1?q?this=20is=20some=20text?=' The exact same string, which is obviously not the encoding for the source string. That is, mb_encode_mimeheader does not do any type of escaping. That is, the following condition is not always true: mb_decode_mimeheader( mb_encode_mimeheader( $text ) ) == $text |
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mb_check_encoding mb_convert_case mb_convert_encoding mb_convert_kana mb_convert_variables mb_decode_mimeheader mb_decode_numericentity mb_detect_encoding mb_detect_order mb_encode_mimeheader mb_encode_numericentity mb_ereg_match mb_ereg_replace mb_ereg_search_getpos mb_ereg_search_getregs mb_ereg_search_init mb_ereg_search_pos mb_ereg_search_regs mb_ereg_search_setpos mb_ereg_search mb_ereg mb_eregi_replace mb_eregi mb_get_info mb_http_input mb_http_output mb_internal_encoding mb_language mb_output_handler mb_parse_str mb_preferred_mime_name mb_regex_encoding mb_regex_set_options mb_send_mail mb_split mb_strcut mb_strimwidth mb_stripos mb_stristr mb_strlen mb_strpos mb_strrchr mb_strrichr mb_strripos mb_strrpos mb_strstr mb_strtolower mb_strtoupper mb_strwidth mb_substitute_character mb_substr_count mb_substr |
