ID: 35711
Updated by: hirokawa@php.net
Reported By: matteo at beccati dot com
-Status: Wont fix
+Status: Feedback
Bug Type: mbstring related
Operating System: Debian GNU/Linux
PHP Version: 5.1.1
Assigned To: hirokawa
New Comment:
Have you ever tried the strict mode (default:FALSE) ?
string mb_detect_encoding ( string str [, mixed encoding_list [, bool
strict]] )
Previous Comments:
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[2005-12-20 17:10:56] matteo at beccati dot com
Of course, I agree that 0xe8 is a valid if taken as part of a multibyte
character, but I don't think it could be considered valid it the next
bytes are missing (because the string ends prematurely). The iconv
extension raises notices when it finds illegal or incomplete multibyte
characters, I don't see why mbstring should accept as a valid UTF-8 a
string which indeed isn't.
The same should apply to other multibyte encodings.
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[2005-12-20 15:44:31] hirokawa@php.net
Please note that encoding detection is not always perfect.
Especially, when the string is too short, the wrong detection might be
caused.
In your case, it is not a bug, but it is the specification.
UTF-8 is a variable length multibyte encoding format,
the length of a character in UTF-8 is from one to six.
Please look at ext/mbstring/libmbfl/filter/mbfilter_utf8.c:about 249L.
0xe8 is a valid byte sequence as the 1st character of 3 byte code.
We cannot detect 0xe8 is ISO-8859-1 or UTF-8,
because this byte is valid in both encodings.
In this case, the response will be choose
from the order defined by mb_detect_order().
I suggest to use the sufficient length of string
for the reliable encoding detection.
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[2005-12-19 09:03:36] sniper@php.net
Rui, can you check this out please?
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[2005-12-19 09:00:50] matteo at beccati dot com
Oops, I just realized that I forgot the -u flag :)
Here is the downlaodable patch:
http://beccati.com/download/mbstring-patch-20051219.txt
------------------------------------------------------------------------
[2005-12-19 08:48:47] sniper@php.net
Please provide any patches in unified diff format. (like the first
one). And downloadable somewhere.
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the rest of the comments, please view the bug report online at
http://bugs.php.net/35711
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