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Check if session variable is empty

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Dec 03.2010

I was wondering if it is possible to check if a session variable is empty and if it is, to set it to something. For example, I have a checkout form where the buyer has the option to set a separate shipping address from their billing address. I want the shipping address to be set as the billing address if they are the same. Here’s what I’ve tried, but it doesn’t seem to be working:

[code=php]
if ($_SESSION[‘shipping_address’] = ”)
{
$_SESSION[‘shipping_address’] = $_REQUEST[‘billing_address’];
}
[/code]

Is there something completely wrong with what I’m doing? Any help is always appreciated! I’m still learning, so I’m sorry if this is an obvious issue!

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PHP

2 Comments(s) ↴

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@DasherDec 03.2010 — You should put the code before any other code, above <!DOCTYPE

[code=php]
ob_start();
session_start();
if ($_SESSION['shipping_address'] == '')
{
$_SESSION['shipping_address'] = $_REQUEST['billing_address'];
}
ob_end_flush();
[/code]

I don't like using $_REQUEST because it can get data from multiple sources, I would specify $_POST if that is how the form is submitted.

Also the if statement needs == not =.
Copy linkTweet thisAlerts:
@UtopiaTheoryauthorDec 03.2010 — You should put the code before any other code, above <!DOCTYPE

[code=php]
ob_start();
session_start();
if ($_SESSION['shipping_address'] == '')
{
$_SESSION['shipping_address'] = $_REQUEST['billing_address'];
}
ob_end_flush();
[/code]

I don't like using $_REQUEST because it can get data from multiple sources, I would specify $_POST if that is how the form is submitted.

Also the if statement needs == not =.[/QUOTE]

Excellent...thank you so much!
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