Empty delimiter error

**TimBaloo** · 26 Jan 2007, 05:46 PM

Hello Zenners,

First, I hope that is the right place to ask this question...

But I am dealing with an error message on my zen site. It's not systematic but occurs frequently :

Warning: strstr() [function.strstr]: Empty delimiter. in /home/WwwBSD/sapapaya.com/includes/functions/functions_general.php on line 983

I found this is about the HTTP referer and i guess this must be linked with buttons (maybe CSS buttons) but I cannot find a way to resolve it. (I know that I'm limited in PHP coding ...)

Has anyone experienced this matter or any idea to get it work fine.

Thanks a lot in advance

**BlindSide** · 26 Jan 2007, 07:35 PM

As you probably know, $_SESSION is a predefined variable, which means PHP always takes care of the values set therein. The following comes from the PHP manual describing the specific variable $_SERVER['HTTP_REFERER']...

The address of the page (if any) which referred the user agent to the current page. This is set by the user agent. Not all user agents will set this, and some provide the ability to modify HTTP_REFERER as a feature. In short, it cannot really be trusted.

Quote originally found on this page. Obviously it's an issue with your browser, but does raise a good concern, namely should we not trust this variable. My gut says no, most main line browsers have no problem providing this information. However, an error condition might be worth considering.

**TimBaloo** · 27 Jan 2007, 02:18 AM

Hi BlindSide,

Thanks a lot for the explanations & the link.

The problem is that i had this error message with 3 different browsers (FF 1.5, IE 6 and Opera 9.1) ...

So I guess there might be something else. I noticed that the error often occurs with pages such as "Members cart" (when returning) or EZ pages.

Maybe there is a connection ?

**a_berezin** · 27 Jan 2007, 12:49 PM

What version you use?
replace this

PHP Code:


if (strstr(HTTP_SERVER, $_SERVER['HTTP_REFERER'])) {

by

PHP Code:


if (isset($_SERVER['HTTP_REFERER']) && strstr(HTTP_SERVER, $_SERVER['HTTP_REFERER'])) {

**DrByte** · 27 Jan 2007, 04:51 PM

Andrew's right -- that's the fix.
You're using an old version of Zen Cart -- the current version has this fix in it already.

**TimBaloo** · 29 Jan 2007, 12:21 AM

Hello guys,

I am on v. 1.3.0.2.

Thanks for the fix, but I replaced the code and I am still having the same message when i am returning to my member's cart.

(If you wanna have a look, here is a test account: [email protected] / 123456. after logging, go to the shopping cart).

Any idea ?

Thx in advance