Hi!

Every web server generates a different $_SERVER array in PHP. I got burnt by it once. I used several keys/values that are present in the Luckasoft EnginServer, but not in Apache. I am sure that IIS again has a different $_SERVER and the whole picture may look different on Linux or Mac OS.

The question of the day is: Which keys/values are guaranteed to be present in $_SERVER on all/most of the modern servers?

David
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