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什么是模板语言？

发布于 2024-09-29 08:36:01 字数 63 浏览 4 评论 0原文

我在某处读到 PHP 是一种模板语言。到底什么是模板语言？是什么让 PHP 成为其中之一？其他模板语言还有哪些？

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无所谓啦 2024-10-06 08:36:01

模板语言背后的前提是该语言“嵌入”到其他一些主文档中。具体来说，在普通文档中，文档的总大小主要是文档源而不是模板语言。

考虑两个人为的示例：

print "This is a simple document. It has three lines."
print "On the second line is my name: " + firstName
print "This is the third line."

This is a simple document. It has three lines.
On the second line is my name: $firstName
This is the third line.

您可以在第一个示例中看到，该语言包装了文档文本。在第二个示例中，文档文本是最常见的，只有一点点代码。

一些模板语言是成熟的通用语言，例如 PHP、ASP.NET 和 Java 的 JSP。其他的则更加有限，专门为模板设计，例如 Velocity 和 FreeMarker（都是 Java 实用程序）。

许多文字处理程序（例如 Microsoft Word）都有自己的模板功能，通常称为“邮件合并”。

The premise behind a template language is that the language is "embedded" within some other master document. Specifically, on your average document, the total size of the document is mostly document source than template language.

Consider two contrived examples:

print "This is a simple document. It has three lines."
print "On the second line is my name: " + firstName
print "This is the third line."

This is a simple document. It has three lines.
On the second line is my name: $firstName
This is the third line.

You can see in the first example, the language wraps the document text. In the second example, the document text is the most prevalent, with just a little bit of code.

Some template languages are full blown general purpose languages, such as PHP, ASP.NET, and Java's JSP. Others are more limited designed specifically for templating, such as Velocity and FreeMarker (both utilities for Java).

Many word processors, such as Microsoft Word, have their own templating capabilities, commonly referred to as "Mail Merge".

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