Re: [PHP] mb_convert_encoding converting to ASCII instead of UTF-8

[email protected] (Robert William Vesterman) Wed, 23 Apr 2008 11:28:48 -0400
Newsgroups	php.general
Message-ID	<[email protected]>
A little additional info: The "ASCII to ASCII" case for "Minnie=Mouse" 
is merely because the UTF-8 encoding for "Mouse" is the same as the 
ASCII encoding for "Mouse", and mb_detect_encoding is matching on ASCII 
before UTF-8.  So that's not an issue.

But, the "UTF-8 to ASCII" case for "Minnie=MiÃ±oso" is still (seemingly) 
screwy.

Robert William Vesterman wrote:
> I've run into a problem where mb_convert_encoding seems to be 
> converting to ASCII, even though I'm telling it to convert to UTF-8.  
> This is with PHP version 4.3.11.
>
> I had been asking it to convert from "auto" to UTF-8, so at first I 
> thought maybe "auto" was not the right choice.  So I called 
> "mb_detect_encoding" to see the format of what I was trying to 
> convert; it said it was already UTF-8 (before I did the conversion).
> So then I thought maybe I got the "from" and "to" parameters backwards 
> (although I was confident I was following the documentation), so I 
> changed mb_convert_encoding to use "UTF-8" as /both/ the from and to.
>
> It still converts to ASCII.
>
> I understand that, given that it's already UTF-8, I don't need to 
> convert it to UTF-8.  But other things that I receive might /not/ be 
> UTF-8, so I am still concerned with this.
>
> Sample code:
>
>   <html><head><title>Minnie</title></head><body><p>
>   <?php
>   $x = $_REQUEST['Minnie'];
>   echo $x . ' ... ' . mb_detect_encoding ( $x ) . '<br/>';
>   $x = mb_convert_encoding ( $x, "UTF-8", "UTF-8" );
>   echo $x . ' ... ' . mb_detect_encoding ( $x ) . '<br/>';
>   ?>
>   </p></body></html>
>
> Output, when called with URL parameter "Minnie=MiÃ±oso":
>
>   MiÃ±oso ... UTF-8
>   Mioso ... ASCII
>
> Then I changed the "from" so that I could try converting from 
> something other than UTF-8:
>
>   $x = mb_convert_encoding ( $x, "UTF-8", mb_detect_encoding ( $x ) );
>
> And now, output when called with "Minnie=Mouse":
>
>   Mouse ... ASCII
>   Mouse ... ASCII
>
> Does anyone have any idea what's going on here? Am I doing something 
> wrong?
>
> Thanks in advance for any help.
>
>