说明：  PHP已经由一个制作个人网页的工具发展成为了世界上最流行的网络编程语言。它保证了许多网络上最繁忙的站点的运行。这一转变带来了亟待关注的问题，那就是性能、可维护性、可测性、可靠性以及最重要的一点—安全性。 与语言的一些功能如条件表达式、循环结构等相比，安全性更为抽象。事实上，安全性更像是开发者的特性而不是语言的特性。任何语言都不能防止不安全的代码，尽管语言的有些特点能对有安全意识的开发人员有作用。 本书着眼于PHP语言，向您展示如何通过操纵PHP一些特殊的功能写出安全的代码。本书中的概念，适用于任何网络开发平台。网络应用程序的安全是一门年轻的和发展中的学科。本书会从理论出发，教会您一些好的习惯，使您能安枕无忧，从容应对恶意者层出不穷的新的攻击和技巧。
(PHP has been produced by a tool for personal web pages to become the world s most popular Web programming languages. It guarantees many of the busiest Web sites running. This shift has brought the issue of urgent concern, that is, performance, maintainability, testability, reliability, and most important point- security. And language features such as the conditional expression, compared to the cycle structure, safety is more abstract. In fact, security is more like the characteristics of developers rather than the characteristics of the language. Can not be in any language to prevent unsafe code, even though some of the characteristics of the language on the development of safety awareness of the role of staff. This book focus on the PHP language, to show you how to manipulate the functions of PHP to write some special security code. The concept of this book for any web development platform. Web application security is a young and developing discipline. This bo)