URL variable to Session variable (using GET method)

Question

I am trying to store a value obtained from a URL variable into a SESSION variable.

Here is the URL:

<a href="webpage.php?store=<?php echo 'Ace'; ?>">Ace Hardware</a>

Here is the SESSION coding, which retrieves the variable, but loses the variable value upon leaving the page.

$_SESSION["store"] = $_GET["store"];
$shopByStore = $_SESSION["store"];

If I plug in the value in quotes as it is below (see "Ace" in code below), it works. But it doesn't work in the code above using the GET method ($_GET["store"])

$_SESSION["store"] = "Ace";
$shopByStore = $_SESSION["store"];

Did you started the session ?

The Alpha
– The Alpha

2014-03-31 23:16:04 +00:00
Commented Mar 31, 2014 at 23:16 — The Alpha
– The Alpha, Commented Mar 31, 2014 at 23:16

Anonymous · Accepted Answer · 2014-03-31 23:17:28Z

2

The problem is that you override the $_SESSION["store"] with the $_GET["store"] each time whether the get request exists or not, so it basically only uses $_GET["store"]. You could use this instead:

if (isset($_GET["store"])) {
    $_SESSION["store"] = $_GET["store"];
}

answered Mar 31, 2014 at 23:17

Anonymous

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The Alpha · Accepted Answer · 2014-03-31 23:22:24Z

2

At first you need to start the session and then make sure it's already not stored in the session (if it's passed in the $_GET) and if not already saved in the session then store it:

// The first line in your script
session_start();

if (isset($_GET["store"])) {
    if (!isset($_SESSION["store"])) {
        $_SESSION["store"] = $_GET["store"];
    }
}

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