php教程

imap_utf8

(PHP 4, PHP 5, PHP 7)

imap_utf8Converts MIME-encoded text to UTF-8

说明

imap_utf8 ( string $mime_encoded_text ) : string

Converts the given mime_encoded_text to UTF-8.

参数

mime_encoded_text

A MIME encoded string. MIME encoding method and the UTF-8 specification are described in » RFC2047 and » RFC2044 respectively.

返回值

Returns an UTF-8 encoded string.

参见

User Contributed Notes

kloewer at gmail dot com 17-Oct-2011 03:08
Use  iconv_mime_decode();

<?php
// This yields "Subject: Prüfung Prüfung"
echo iconv_mime_decode("Subject: =?UTF-8?B?UHLDvGZ1bmcgUHLDvGZ1bmc=?=",
                      
0, "ISO-8859-1");
?>

http://php.net/manual/de/function.iconv-mime-decode.php
esvit at mail dot ru 26-Jan-2011 05:12
That fixed the all caps issue:

<?php
function imap_utf8_fix($string) {
  return
iconv_mime_decode($string,0,"UTF-8");
}
?>
number0 at tlen dot pl 06-Jul-2009 02:43
string in uppercase error http://bugs.php.net/bug.php?id=44098
my function to decode string

<?php
function decodeMimeStr($string, $charset="UTF-8" )
{
     
$newString = '';
     
$elements=imap_mime_header_decode($string);
      for(
$i=0;$i<count($elements);$i++)
      {
        if (
$elements[$i]->charset == 'default')
         
$elements[$i]->charset = 'iso-8859-1';
       
$newString .= iconv($elements[$i]->charset, $charset, $elements[$i]->text);
      }
      return
$newString;
}
?>
MetaYii 22-Jun-2009 01:24
Be aware: imap_utf8 tends to return the string in uppercase.
Anonymous webmaster@luzon14DoTCom 30-Jul-2007 12:43
You may also try this example:

$_subject = "=?iso-8859-1?b?THV6b26uMTQ=?= dot CoM";
echo utf8_decode(imap_utf8($_subject));

OUTPUT: Luzon®14 dot CoM

Regards,
Tuso/Nazareth
hans at lintoo dot dk 19-Sep-2005 04:42
Also see:
<?php
imap_mime_header_decode
($sting);
?>
Don't try to decode subjects with this one... imap_mime_header_decode does a much better job at that.
marcelo at maccoy dot com dot br 14-Feb-2005 12:01
# this script are correct with the right signs remove expression
# please, ignore the later.
function decode_utf8($str){
       # paterns
           $err="(=\?.{10,13}q\?_?|\?\=)";
           $pat = "/=([0-9A-F]{2})/";
           $cha="'.chr(hexdec(";
       # erase null signs in string
          $str=eregi_replace($err,"",$str);
       # to decode with eval and replace
          eval("\$str='".
                  preg_replace($pat,$cha."'$1')).'",$str)
                  ."';");
        # return
           return $str;
}
#Note: you can to reduce this script in 3 lines.
aperez at informatica dot 24ruedas dot com 10-Jun-2004 12:05
I got issues decoding strings with spanish characters. I found encodeISO88591() function at this manual as an user note.

After having problems with imap_utf8() and utf8_decode(), I've decided create a function decodeISO88591() for decoding strings encoded with encodeISO88591().

Here's the code(I've translated remarks and variable and array names from spanish to english for better understanding):

function encodeISO88591($string)
{
  // ISO-8859-1 string header
  $stringISO = "=?iso-8859-1?q?";
 
  // Each character are encoded('equal-to' symbol + hexadecimal value from ASCII code)
  for($i=0;$i<strlen($string);$i++)
  {
    // Basic ASCII characters are not encoded
    if(ord(substr($string,$i,1))<1 || ord(substr($string,$i,1))>127)
    {
      $char = ord($string[$i]);
      $char = strtoupper(dechex($char));
      $stringISO.="=".$char;
    }
    else
    {
      $stringISO.=substr($string,$i,1);
    }
  }
 
  // ISO-8859-1 string footer
  $stringISO.="?= ";
 
  return($stringISO);
}

// And this is my function decodeISO88591()

function decodeISO88591($string)
{
  // Arrays for obtaining hexadecimal values
  // for each ISO-8859-1 charset
  $mAlfa=array("A","B","C","D","E","F");
  $mNum=array();
  for($n=0;$n<10;$n++)
  {
    $mNum[]=$n;
  }
 
  // ISO-8859-1 charset
  $iso88591=array(" ","?","?","?","?",
                         "?","?","?","?","?","?",
                         "?","?","?","?","?","?",
                         "?","?","?","?","?","?",
                         "?","?","?","?","?","?",
                         "?","?","?","?","?","?",
                         "?","?","?","?","?","?",
                         "?","?","?","?","?","?","?",
                         "?","?","?","?","?","?",
                         "?","?","?","?","?","?",
                         "?","?","?","?","?","?","?",
                         "?","?","?","?","?","?","?",
                         "?","?","?","?","?","?","?","?",
                         "?","?","?","?","?","?","?",
                         "?","?","?","?","?","?","?");
  // Hexadecimal values array
  for($a=0;$a<sizeof($mAlfa);$a++)
  {
    for($n=0;$n<sizeof($mNum);$n++)
    {
      $mHex[]=$mAlfa[$a].$mNum[$n];
    }
    for($a2=0;$a2<sizeof($mAlfa);$a2++)
    {
      $mHex[]=$mAlfa[$a].$mAlfa[$a2];
    }
  }
 
  // ISO-8859-1 string header and footer are deleted
  $string=str_replace("=?iso-8859-1?q?","",$string);
  $string=str_replace("?= ","",$string);
 
  // Encoded values are decoded
  for($h=0;$h<sizeof($mHex);$h++)
  {
    $string=str_replace(("=".$mHex[$h]),$iso88591[$h],$string);
  }
 
  return($string);
}

I hope this helps somebody. :)
mogster_at_boomdesign.no 31-Oct-2002 03:53
To get a complete decode to utf8 (which is the protocol with "national" characters), use these two:
$subject = "=?ISO-8859-1?Q?B=F8lla?=, med =?ISO-8859-1?Q?=F8l?= i baggen";
$subject = imap_utf8($subject);
$subject = utf8_decode($subject);
will return the subject in 8-bit ascii.
That is, both functions.

knutm :-)

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