how to against refresh button (F5)

[Anon]

i sumbit a new data using MSIE,after submit,
i press F5 button,it will send the same data again,sohow to clear the cache using PHP~

[Anon]

After your php script has processed the data, use the

header("location: other_location.php");

to redirect the user to a different page. This will force a new URL into the browser automatically. If the user presses F5, he will reload the new URL instead of the one that inserts the data.