Question

I have a function that imports a files contents into mySQL and returns the results. If i refresh the page and click “yes” it will do it again doubling the output with the same content.

How can I stop this happening? In this particular case there is no URI in the address bar but on other functions there is.

Answer 1

You should just check if the contents in the database exist, if they don’t, fill them. Otherwise don’t run the function.

psuedo-code:

if !database.containsRecords
  fillDatabase()
end

On top of this, it is always good practice to redirect after a POST request. So you would want:

fillDatabase();
header("Location page.php");
exit();