$_SERVER['http_referer'] returns blank in Internet Explorer

: Joel Lipman; Microsoft; 19 October 2009; Hits: 11318

Thought I'd put a note about this as I spent ages rewriting an entire system. The HTTP_REFERER environment variable can be changed by the user anyway but I was using it as an additional validation check.

The only solution is to not use it for verification purposes as it will only work in every other browser except Internet Explorer (more specifically versions 6 and 7...???)

For more details: http://www.webmaster-talk.com/php-forum/19149-_server-http_referer-fails-under-internet-explorer.html

Credit where Credit is Due:

Feel free to copy, redistribute and share this information. All that we ask is that you attribute credit and possibly even a link back to this website as it really helps in our search engine rankings.

Disclaimer: Please note that the information provided on this website is intended for informational purposes only and does not represent a warranty. The opinions expressed are those of the author only. We recommend testing any solutions in a development environment before implementing them in production. The articles are based on our good faith efforts and were current at the time of writing, reflecting our practical experience in a commercial setting.

Thank you for visiting and, as always, we hope this website was of some use to you!

Kind Regards,

Joel Lipman
www.joellipman.com

URL passed settings in Reporting Services (19756) Joel Lipman (SQL Server Reporting Services)
Thought I'd put a note on how to remove the toolbar using the URL as I didn't find this clear on the net. Tried it and it...
SSRS Change Background Color of Image (14089) Joel Lipman (SQL Server Reporting Services)
What? Sounds easy but actually if you use an image which has transparent areas, ie. has one color which will be...
Crystal Reports: Exporting to Excel omits column headers (20088) Joel Lipman (Excel)
If you've been to the point where you're exporting a report to Excel, and only some of the column headers appear, then try...
SSRS Border Problem (9003) Joel Lipman (SQL Server Reporting Services)
What? A very quick note on why borders may be misbehaving in SSRS. This note corrects the situation at Design time....
Running Internet Explorer 6, 7, 8 as standalones (16763) Joel Lipman (Windows OS)
Intro I know there are a lot of articles on the WWW detailing this process but none of them really worked for me. I...
Windows 10: Shortcut Apps to Settings (4815) Joel Lipman (Windows OS)
Applies To: Microsoft Windows 10 Pro v10.0.18362 What? This is a list of apps that if run via the run command, or used...
If Then Else in Report Builder 2.0 Expressions (40066) Joel Lipman (SQL Server Reporting Services)
Yes, well don't laugh, I could not find this on the WWW so I was obviously not using Google properly. Anyway here's...