从另一个php文件调用未定义的函数 [英] Call to undefined function from another php file

问题描述

好吧这就是我的代码看起来像

Alright this is what my code looks like

index.php

require_once($WebsiteRoot . "/include/testfile.php");
TestFunction();

/include/testfile.php

function TestFunction()
{
    echo "It Works";
}

它给了我错误：

Fatal error:
Call to undefined function TestFunction() in /path/index.php on line 49

知道我做错了什么吗？
谢谢

Any idea what i'm doing wrong? Thanks

推荐答案

确保包含您认为自己的文件。如果您的 index.php 页面看起来与您所说的完全一致，那么它将不会返回任何内容。

Make sure you're including the file you think you are. If your index.php page looks exactly like you've stated, then it won't return anything.

如果您想从网站上的任何位置链接到同一位置而不必担心相对位置，那么在文件的开头，输入：

If you want to link to the same location from anywhere on the site without worrying about relative locations, then at the beginning of the file, put:

$WebsiteRoot=$_SERVER['DOCUMENT_ROOT'];

它应该可以正常工作，只要你的文件位于 http://mywebsite.com/include/testfile.php

And it should work fine, provided your file would be located at http://mywebsite.com/include/testfile.php

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