[SOLVED] removing files

[shadiadiph]

i have a file upload form once submitted it works fine inserts picture names to the database and saves them to file only problem is if i refresh the page it inserts them again?? how can i reset them

 

how can i clear all these once they have been posted once?

$fileatt_name = $_FILES['fileatt']['name']; 
$attachment1 = stripslashes($fileatt_name[0]);
$attachment2 = stripslashes($fileatt_name[1]);
$attachment3 = stripslashes($fileatt_name[2]);
$attachment4 = stripslashes($fileatt_name[3]);
$filedes1    = stripslashes($_POST["desfileatt"][0]);
$filedes2    = stripslashes($_POST["desfileatt"][1]);
$filedes3    = stripslashes($_POST["desfileatt"][2]);
$filedes4    = stripslashes($_POST["desfileatt"][3]);

[papaface]

You could try:

$_FILES = array();
$_POST = array();

But for a fool proof way, I think you may have to generate a value in a hidden field which is unique. When someone uploads something have that value inserted into the database IF its not already in the table. If it is then it is a duplicate (i.e the person refreshed the page) and have the script exit or produce an error.

[shadiadiph]

m thank you but that did not work isn't there anyway of destroying a post value once it has been posted? I tried to unset all the values e.g unset($attachment1); but that didn't work either?

[Mark Baker]

You can't destroy the post value because it's being resubmitted by the browser and rerunning the script. What you want to do is set a cookie when running the script the first time... then, if the user refreshes, you test to see if the cookie is already set and if it is, you don't process the request again

[shadiadiph]

problem with that is the user can upload up to 20 images 4 at a time using the same submit script

[shadiadiph]

ok i wrote a code to check if the file exists already