vb.org Archive - Easily prevent HTML injection

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filburt1

04-22-2003 10:00 PM

Easily prevent HTML injection

To easily prevent HTML injection from HTML that happens to be in the results of a database query, do this:

PHP Code:


		
			
while ($bits = $DB_site->fetch_array($result))

{

    foreach ($bits as $key => $value) $bits[$key] = htmlspecialchars($value);

    .

    .

    .

}

That goes through every single element from the fetch_array method and converts all HTML junk to their entities. Then, when you use "$bits[something]" in a template, the user won't be able to inject HTML at all.

bobk	07-19-2003 05:26 PM

This protects if the data is already in the database.... what should check for when inserting data? Or is that in an FAQ that I haven't found yet?

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