Rob Ristroph wrote:
I'm trying help someone who has a simple search box on their php
web page, into which you can enter an SQL query. The problem is that
sometimes "%da" is interpreted into an accented capital U, as if some
unicode translation was happening somewhere.
It's looks like the translation is already there by the time we
examine http_submit_vars. Is it a setting of the brower ? That seems
unlikely because the URL appears ok in the apache log. I decided it
must be some setting in php.ini, but the only thing that looked like
it might apply was the magic_quotes_gpc setting, and I tried it both
ways and I still have the problem.
This is a character-encoding problem.
If %da is interpreted in iso-8859-1 it will be shown as the accented
capital U
<?php
$x = isset($_GET['data']) ? $_GET['data'] : '(no data)';
header('Content-Type: text/html; charset=iso-8859-1');
echo '<html><head><title>test</title></head><body>';
echo '<p>data is represented as: ', $x, '.</p>';
echo '<p>in hexadecimal that is: ', bin2hex($x), '.</p>';
echo '</body></html>';
?>
Now go to this page with some data in the URL
page.php?data=ooo%daooo
page.php?data=ooo%25daooo
Change charset to one of ( utf-8 | us-ascii | big5 | ... )
and see the differences :-)
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