Getting the previous page GET parameters in PHP
Question by Alex
I have a range of similar pages that have a URL along the lines of www.mydomain.com/group?id=1.
From each of these pages there is a form that posts it’s values to the server. I need to work out what the id of the group was when the form is posted. I’m aware of being able to use $_SERVER['HTTP_REFERER'] and then maybe I could use a regex to get the id. However, I wondered if there was anything in PHP that would allow you to get the previous $_GET variables?
Alternatively, do people think it is a much better idea to store the current group id as a session variable?
Answer by Starx
Yes, Session is the way to go to . Store them and get the groups on every other page, using session . This is a proper way.
Despite, it is also possible to make $_GET available for every page. Using two ways (AFAIK).
-
Create the exact same URL String with the parameters and send them along, as you are redirecting from page to page.
- Or use functions like
parse_url()to get only the query string and pass them along
- Or use functions like
-
Use Session to back up the $_GET and reassign it to $_GET on every page. Put the below snippet or every page you redirect to.
if(isset($_SESSION['GET_BACKUP']) { //Check if there was a backup before $_GET = $_SESSION['GET_BACKUP']; //if yes use it } if(isset($_GET) && count($_GET)) { //if not and GET value is sent $_SESSION['GET_BACKUP'] = $_GET; //backup it } // Now use the get as you used to via $_GETFollowing this way, you will not get an attached data in the URL, which might be undesirable.
Update:
In case you are going with the second option, you should remember that the solution I provided is an demo and will not fit for more than one $_GET group. For multiple pages and storing their SESSIONS, you have to define separate keys to identify the backup. Kinda like
$_SESSION['mypage.php']['GET_BACKUP'] = $_GET;
