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John Coggeshall is a PHP consultant and author who started losing sleep over PHP around five years ago. Lately you'll find him losing sleep meeting deadlines for books or online columns on a wide range of PHP topics. You can find his work online at O'Reilly Networks onlamp.com and Zend Technologies, or at his website. John has also contributed to WROX Press' Professional PHP4 Programming and is currently in the progress of writing PHP Unleashed by Sams Publishing.