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PHP References (O'Reilly)

John Coggeshall illustrates PHP objects on O'Reilly. "In my last article, I wrapped up my discussion of using objects in PHP. This week I'll be changing gears a little bit and discussing one of the more elusive aspects of PHP -- references. For those of you with a C programming background (although they are fundamentally different), references serve the same purpose as a C-style pointer. For those of you without programming experience in C, don't worry! I'll be covering everything you'll need to know today."
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