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Posted by Marcus on 08/09/06 19:05
I am trying to determine if data entered in a $_POST variable in a form
contains all ASCII (0 - 127) characters or not. To do this I am using
mb_detect_encoding(). I am running into problems with non-English
characters, however - for example, I translated the word 'test' into
Russian and got 'испытание'. If I feed this into the function as:
$_POST['var'] = 'испытание'; // from form
echo mb_detect_encoding($_POST['var']);
it returns ASCII. After thinking about it and running some tests I
figured out that it is doing this because PHP is feeding
mb_detect_encoding the string after it is converted to its html
representation, i.e. instead of 'испытание' mb_detect_encoding() is
getting
'испытание'.
Obviously all of these characters are ASCII, and as far as I can tell
this is what's happening.
Is there a way that I can tell if data entered is ASCII or not BEFORE it
is converted? With the example above, I would want this test to fail
(not return ASCII). Thanks in advance.
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