PHP/MySQL problem-double record entry-please help!

[mama1]

I am running a PHP website retreiving information from MySQL database. MySQL record creation on certain fields is open to the end-user. I keep on getting double entry on those fields and therefore my PHP retreival on drop down lists contains those double entries. I am trying to eliminate this problem.
Please bear in mind that I am relatively new to PHP and MySQL. I dealt with JAVA and Microsoft's SQL before but PHP and MySQL is slightly different game.

Any help would be appreciated.

Thank you!

 

[mikewoodhouse]

The title of this form is "Object-Oriented Analysis & Design".

How exactly do you see your problem coming under this heading?

Sorry, the best help I can offer.