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Superglobals> <Spotting References
Last updated: Fri, 24 Apr 2009

Predefined variables

PHP provides a large number of predefined variables to all scripts. The variables represent everything from external variables to built-in environment variables, last error messages to last retrieved headers.

See also the FAQ titled "How does register_globals affect me?"

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Superglobals> <Spotting References
Last updated: Fri, 24 Apr 2009