Should I sanitize EVERY form variable passed along?

Posted by Camran on Stack Overflow See other posts from Stack Overflow or by Camran
Published on 2010-06-09T13:22:40Z Indexed on 2010/06/09 13:32 UTC
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Filed under:

php

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sql

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mysql

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database

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security

I have a form with many fields...

The action is set to a php page which queries mysql...

Should I sanitize with mysql_real_escape_string every single variable? Or can I ignore sanitizing drop-lists and radios for instance?

Also, besides mysql_real_escape_string, what else should I do to prevent attacks?

Thanks

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