[FIXED] How to delete $_POST variable upon pressing 'Refresh' button on browser with PHP?

Issue

When I press the 'refresh' button on my browser, it seems that $_POST variable is preserved across the refresh.

If I want to delete the contents of $_POST what should I do? Using unset for the fields of $_POST did not help.

Help? Thanks!

Solution

The request header contains some POST data. No matter what you do, when you reload the page, the rquest would be sent again.

The simple solution is to redirect to a new (if not the same) page. This pattern is very common in web applications, and is called Post/Redirect/Get. It's typical for all forms to do a POST, then if successful, you should do a redirect.

Try as much as possible to always separate (in different files) your view script (html mostly) from your controller script (business logic and stuff). In this way, you would always post data to a seperate controller script and then redirect back to a view script which when rendered, will contain no POST data in the request header.

Answered By - burntblark

Answer Checked By - Terry (PHPFixing Volunteer)