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PHP Variables: a Special Kind of Value Relativism

Posted on 17 November 2002 by Demian Turner

Aside from being a site that’s offering quite an interesting OO PHP framework, http://www.blueshoes.org has a PHP cheatsheet that scratches an itch for many programmers. When is a variable false, null, isset(), or empty(). Make sure to check out the syntax exam while you’re there, and watch out for the questions on references.

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