Bug #53596 [Opn->Csd]: Function iconv_mime_decode failed to decode utf-8 header

anton dot a dot minin at gmail dot com Thu, 23 Dec 2010 11:18:19 -0800

Edit report at http://bugs.php.net/bug.php?id=53596&edit=1


 ID:                 53596
 User updated by:    anton dot a dot minin at gmail dot com
 Reported by:        anton dot a dot minin at gmail dot com
 Summary:            Function iconv_mime_decode failed to decode utf-8
                     header
-Status:             Open
+Status:             Closed
 Type:               Bug
 Package:            ICONV related
 Operating System:   CentOS release 5.5
 PHP Version:        5.3.4
 Block user comment: N
 Private report:     N

 New Comment:

With the php.ini option iconv.internal_encoding=utf-8 it works properly.


Previous Comments:
------------------------------------------------------------------------
[2010-12-23 11:02:27] anton dot a dot minin at gmail dot com

Description:
------------
---

>From manual page: http://www.php.net/function.iconv-mime-decode

---



Function iconv_mime_decode can't decode header with non-ascii
characters, if 

charset differs from ISO-8859-1.



For example iconv_mime_decode can't decode string

"Subject:
=?utf-8?Q?=D0=9F=D1=80=D0=B8=D0=B2=D0=B5=D1=82,=20=D0=9C=D0=B5?=

 =?utf-8?Q?=D0=B4=D0=B2=D0=B5=D0=B4!=20(Hello,=20Bear!)?="

Test script:
---------------
<?php



$plan = array(

    // It's erroneous way to encode non-ascii text with ISO-8859-1, but


    // in this case the encode and the decode are inverse functions

    // i. e. $a == decode(encode($a))

    array(

        'description'    => "Non-ASCII characters, ISO-8859-1 to
ISO-8859-1 conversion",

        'subject'        => "ÐÑÐ¸Ð²ÐµÑ, ÐÐµÐ´Ð²ÐµÐ´Ñ! (Hello,
Bear!)", 

        'prefs'          => array(

            'input-charset'  => 'iso-8859-1',

            'output-charset' => 'iso-8859-1',

        )

    ),

    // unfortunately fails

    array(

        'description'    => "Non-ASCII characters and UTF-8",

        'subject'        => "ÐÑÐ¸Ð²ÐµÑ, ÐÐµÐ´Ð²ÐµÐ´! (Hello,
Bear!)",

        'prefs'          => array(

            'input-charset'  => 'utf-8',

            'output-charset' => 'utf-8',

        )

    ),

    array(

        'description'    => "Only ASCII characters and UTF-8",

        'subject'        => "Hello, Bear!",

        'prefs'          => array(

            'input-charset'  => 'utf-8',

            'output-charset' => 'utf-8',

        )

    ),

    array(

        'description'    => "Only ASCII characters and Windows-1251
charset",

        'subject'        => "Hello, Bear!",

        'prefs'          => array(

            'input-charset'  => 'utf-8',

            'output-charset' => 'windows-1251',

        )

    ),

    array(

        'description'    => "Non-ASCII characters and Windows-1251
charset",

        'subject'        => "ÐÑÐ¸Ð²ÐµÑ, ÐÐµÐ´Ð²ÐµÐ´Ñ! (Hello,
Bear!)",

        'prefs'          => array(

            'input-charset'  => 'utf-8',

            'output-charset' => 'windows-1251',

        )

    )

);



foreach ($plan as $case) {

    

    printf("\n\nStart: %s\n%s\n", $case['description'], str_repeat("=",
80));

    

    $prefs = $case['prefs'];

    $prefs['scheme'] = 'Q';



    $subject_encoded = iconv_mime_encode('Subject', $case['subject'],
$prefs);

    

    printf("Encoded subject: %s\n", var_export($subject_encoded, 1));

    

    if (!$subject_encoded) {

        $status = 'FAILED due to iconv_mime_encode';

    } else {

        $status = false === iconv_mime_decode($subject_encoded) ?
'FAILED' : 'PASSED';

    }

    

    printf("[%s] %s\n", $status, $case['description']);

}



echo "\n";



Expected result:
----------------
All tests should pass.

Actual result:
--------------
Start: Non-ASCII characters, ISO-8859-1 to ISO-8859-1 conversion

================================================================================

Encoded subject: 'Subject:
=?iso-8859-1?Q?=D0=9F=D1=80=D0=B8=D0=B2=D0=B5=D1=82,?

=

 =?iso-8859-1?Q?=20=D0=9C=D0=B5=D0=B4=D0=B2=D0=B5=D0=B4=D1=8C!=20(Hello,?=

 =?iso-8859-1?Q?=20Bear!)?='

[PASSED] Non-ASCII characters, ISO-8859-1 to ISO-8859-1 conversion





Start: Non-ASCII characters and UTF-8

================================================================================

Encoded subject: 'Subject: =?utf-8?Q?

=D0=9F=D1=80=D0=B8=D0=B2=D0=B5=D1=82,=20=D0=9C=D0=B5?=

 =?utf-8?Q?=D0=B4=D0=B2=D0=B5=D0=B4!=20(Hello,=20Bear!)?='

[FAILED] Non-ASCII characters and UTF-8





Start: Only ASCII characters and UTF-8

================================================================================

Encoded subject: 'Subject: =?utf-8?Q?Hello,=20Bear!?='

[PASSED] Only ASCII characters and UTF-8





Start: Only ASCII characters and Windows-1251 charset

================================================================================

Encoded subject: 'Subject: =?windows-1251?Q?Hello,=20Bear!?='

[PASSED] Only ASCII characters and Windows-1251 charset





Start: Non-ASCII characters and Windows-1251 charset

================================================================================

Encoded subject: 'Subject: =?windows-1251?Q?

=CF=F0=E8=E2=E5=F2,=20=CC=E5=E4=E2=E5=E4=FC!=20(?=

 =?windows-1251?Q?Hello,=20Bear!)?='

[FAILED] Non-ASCII characters and Windows-1251 charset


------------------------------------------------------------------------



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Edit this bug report at http://bugs.php.net/bug.php?id=53596&edit=1

Bug #53596 [Opn->Csd]: Function iconv_mime_decode failed to decode utf-8 header

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