开方括号和闭方括号([和])分别标志代码块的开始和结束。

The open and close brackets ([and]) mark the beginning and end of the code block, respectively.

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本文演示了闭包在PHP V 5.3代码中作为函数编程构造时多么有用。

This article demonstrated how useful closures are as a functional programming construct within PHP V5.3 code.

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对于没用闭包写成的代码来说，到现在为止还算不错。

So far so good, for code written without closures.

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