Testing SQL Injection


I was wondering is there anyway I can test if my php application is SQL Injection proof?

I mean are there any sql queries which i can try running in my forms etc?

Any help will be appreciated.


There have been at least two topics of this nature in the past week in the php forum. Also a search on your search engine of choice for sql injection or sql injection strings will give you samples.

Please back up your database BEFORE testing.