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Clear filters![$_SERVER['http_referer'] returns blank in Internet Explorer](/assets/images/site/bckg-3-bw.jpg)
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 Inte...
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This site exists as a practical knowledge base built from real-world experience across systems, platforms, and technologies since 1999. Much of the content documents solutions, edge cases, and working patterns that were learned through investigation where documentation was incomplete or absent, and is shared to reduce the same friction for others.
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