問題描述
我有一個帶有 Resp 類的文件.路徑是:
I have a file with a class Resp. The path is:
C:xampphtdocsOneClassesResp.php
我在這個目錄中有一個 index.php 文件:
And I have an index.php file in this directory:
C:xampphtdocsTwoHttpindex.php
在這個 index.php 文件中，我想實例化一個 Resp 類.
In this index.php file I want to instantiate a class Resp.
$a = new Resp();
我知道我可以使用 require 或 include 關鍵字將文件包含在一個類中:
I know I can use require or include keywords to include the file with a class:
require("OneClassesResp.php"); // I've set the include_path correctly already ";C:xampphtdocs". It works.
$a = new Resp();
但我想在不使用 require 或 include 的情況下導入類.我試圖了解 use 關鍵字的工作原理.我嘗試了這些步驟，但沒有任何效果:
But I want to import classes without using require or include. I'm trying to understand how use keyword works. I tried theses steps but nothing works:
use OneClassesResp;
use xampphtdocsOneClassesResp;
use htdocsOneClassesResp;
use OneClasses;
use htdocsOneClasses; /* nothing works */
$a = new Resp();
它說:
Fatal error: Class 'OneClassesResp' not found in C:xampphtdocsTwoHttpindex.php
關鍵字use 是如何工作的?我可以用它來導入課程嗎?
How does the keyword use work? Can I use it to import classes?
推薦答案
use 不包含任何內容.它只是將指定的命名空間(或類)導入到當前作用域
use doesn't include anything. It just imports the specified namespace (or class) to the current scope
如果您希望自動加載類 - 閱讀關于自動加載
If you want the classes to be autoloaded - read about autoloading
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