At the most basic level good programming is determined by whether or not an application or script works as intended. This is where the beginning programmer will leave things, and there is nothing wrong with that. However, the advanced programmer will work past that point, striving toward improved efficiency, reliability, security, and portability. This book teaches you how to develop the skills of an advanced PHP programmer.
One thing the advanced PHP programmer does better than the beginner is learning to take advantage of more obscure or harder-to-comprehend features of the language. For example, while you probably already know how to use arrays, you may not have mastered multidimensional arrays: creating them, sorting them, and so on. You have written your own functions by this point but may not understand how to use recursion and static variables. Issues like these will be discussed as well as other beyond-the-basics concepts, like the heredoc syntax and the printf()/sprintf() family of functions.
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