您可能会问，我为什么不只在脚本末尾调用delete_all方法。
You might ask why I don't just have a delete_all method that would be called at the end of the script.
每个函数的末尾调用printData 函数，根据 $print类变量的值返回XHTML数据，或显示到浏览器。
The end of each function calls the printData function, and based on the value of the $print class variable the XHTML data will either be returned from the function or displayed to the browser.
当处理器从元素的模板调用该模板时，它将一个空格添加到值的末尾，因此始终至少有一个空格。
Notice that when the processor calls this template from the template for the element, it adds a space to the end of the value so there will always be at least one space.
尽管如此，对于mmap来说，调用本身可能十分昂贵，所以在末尾的未使用内存超过一个可调整的阀值时才被尝试使用。
However, as with mmap, the call itself can be expensive, so is only attempted if trailing unused memory exceeds a tunable threshold.
注意顶层模板末尾处的showpage调用。
Note the call to showpage at the end of the top-level template.
本文在正文部分提供了一些重要调用的代码片段，并在文件wsrr_examples . zip中提供了完整的源代码，您可以在本文末尾处下载该文件。
The article provides code snippets of the important calls in the body of the article, and complete source code in the file wsrr_examples.zip, which you can download at the bottom of the article.
本文在正文部分提供了一些重要调用的代码片段，并在文件wsrr_examples . zip中提供了完整的源代码，您可以在本文末尾处下载该文件。
The article provides code snippets of the important calls in the body of the article, and complete source code in the file wsrr_examples.zip, which you can download at the bottom of the article.
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