为什么php中有句号 [英] why are there periods in php

问题描述

可能的重复:
有什么作用句点"字符 (.) 表示如果在 php 字符串中间使用?

正如标题所说，为什么后面的代码中包含句点?

As the title says, why are the periods included in the code that follows?

require("mod/".$modarrayout."/bar.php"); 

显然，这是因为变量在字符串之间，但引号不应该解决这个问题吗?只是想知道澄清一下我将来做的编码.

Obviously, it's because the variable is between strings, but shouldn't the quotes have taken care of that? Just want to know to clarify for coding that I do in the future.

推荐答案

在 PHP 中，句号是连接运算符.将句点放入告诉 PHP 将 "mod/" 连接到 $modarrayout，然后将结果字符串连接到 "/bar.php".请参阅此页面:

In PHP, the period is the concatentation operator. Putting the periods in tells PHP to concatenate "mod/" to $modarrayout and then concatenate the resulting string to "/bar.php". See this page:

http://www.php.net/manual/en/language.operators.string.php

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