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From: Arno Welzel <usenet@arnowelzel.de>
Newsgroups: comp.lang.php
Subject: Re: Encoding Problems
Date: Sat, 05 Jul 2014 03:19:25 +0200
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Arno Welzel, 2014-07-05 03:16:

> stef_204, 2014-07-02 17:53:
> 
>> Hi,
>>
>> Newbie at php; please bear with me.
>>
>> I am trying to use a script which basically creates an xml feed for email
>> messages found in an IMAP account; one can then either subscribe to feed
>> via an rss reader/aggregator or use browser to read html page.
>>
>> Here is the script: <http://linuxtrove.com/wp/?p=209>
>> (imap2rss.php)
>>
>> My problem: almost all of the messages (emails) show garbled text, I
>> believe due to encoding problems.
>>
>> Here is a picture of how it looks both using a browser like Firefox or an 
>> rss news feed reader.
>>
>> <http://imagebin.org/314843>
> 
> This is base64 and as to be decoded.
> 
> [...]
>> I could be completely wrong about the utf-8 issue; and perhaps it has 
>> more something to do with decoding base64 in general.
> 
> Yep - that's the point.
> 
>> This is what I now think is the problem, more specifically:
>> I have just tried a base64 online decoder and pasted the garbled text in 
>> it and used the "decode" online feature, and the result is perfectly 
>> legible once decoded, whether I choose utf-8 or ascii as charset (but I 
>> should use utf-8).
>>
>> So, looks like the feed is "echoed" or "printed" in base64 format....
>> It doesn't look like charset is the problem but decoding base64.
> 
> Yep.
> 
>>
>> I can see the base64_decode function here
>> <http://www.php.net/manual/en/function.base64-decode.php>
>> but not sure if this is the right way to go about this; or how to apply 
>> it in this script.
> 
> Well - unfortunately there is no easy "put it in there and it works".
> 
> First of all: Just testing for the subtype "PLAIN" (is not enough. You
> also have to check for the encoding.
> 
> As far i see, this should be added here:
> 
> if($msgStructure->subtype=="PLAIN")
> $body = renderPlainText($body);
> 
> So extend that for the encoding:
> 
> if($msgStructure->subtype=="PLAIN")
> {
>   switch($msgStructure->encoding)
>   {
>   case 4:
>     // Body text is quoted-printable encoded
>     $body = quoted_printable_decode($body);
>     break;
> 
>   case 3:
>     // Body text is base64 encoded
>     $body = base64_decode($data);

Ups - sorry for the c&p typo. Of course it should be:

     $body = base64_decode($body);

>     break;
>   }
> 
>   $body = renderPlainText($body);
> }
> 
> Also see <http://php.net/manual/en/function.imap-fetchstructure.php> and
> the comments there.



-- 
Arno Welzel
http://arnowelzel.de
http://de-rec-fahrrad.de
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