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Title: Disappointingly poor index
Review: I'm new to PHP and MySQL, but a programmer for over 3 decades. I'm customizing some PHP code, using code examples for ideas. When I (a) see something I want to understand better or (b) want to find the PHP analog for basic functions, I naturally turn to the index to try to find the information I need. However, I found the index very disappointing because of what it doesn't have. For example, simple and basic keywords are not in the index: "comment", "logical operator", "and", "or", etc. I'm going to have order a different book as a PHP reference.
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