Insert double entry in DB

I created plugin and my plugin create new Table in DB. My problem is when user type something in field firstname, lastname... and click on button Submit, that go to my table and that is ok.. but then when user do a refresh page, then again i get the same imports in my table. And if field are empty and I do refresh I get the new row in table with empty firstname and lastname.. Here is my code..

http://pastebin.com/RJcFXeUV - this is my main.php

http://pastebin.com/Myqz5brq - this is mu form.php

So I want to enter data in my table just when fields are !empty and only when user click the submit, not after every refresh..

Topic table mysql php database Wordpress

Category Web

1
answered at

Simple – if you do not want duplicate information then before you insert anything check if such data is already present. Just query for it and see if there is a match.

From WP perspective however, you seem to be looking at technique (database table) that you will rarely need in practice. WordPress offers wealth of storage options and your time is likely better spent exploring theme, before rolling your own custom storage.

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