创建对象时的反斜杠语法 [英] Backslash syntax when creating objects

问题描述

require和require_once中的路径类似于(dir1/dir2/test.php).
我们可以创建与$obj= new class1/class2;相同的对象吗?
如果是，请解释.

The path in require and require_once is like (dir1/dir2/test.php).
Can we create objects the same like $obj= new class1/class2;?
If yes, please explain.

http://php-fedex-api- wrapper.googlecode.com/svn/trunk/htdocs/example1.php

$rateRequest = new ComplexType\RateRequest();

推荐答案

它不使用路径，它在使用

It is not using the path, it is using the namespace (ComplexType); a feature built-into PHP 5.3.

更多信息:

• http://php.net/manual/en/language.namespaces. importing.php

但是，如果要自动加载某些类，请查看 魔术功能.

If however, you want to autoload certain classes, take a look at __autoload magic function.

许多开发人员在写作 面向对象的应用程序创建 每个类一个PHP源文件 定义.最大的之一 烦恼不得不写很长的篇幅 所需的清单包括在 每个脚本的开头(每个脚本一个 类).

Many developers writing object-oriented applications create one PHP source file per-class definition. One of the biggest annoyances is having to write a long list of needed includes at the beginning of each script (one for each class).

在PHP 5中，这不再是必需的. 您可以定义__autoload函数 如果出现这种情况，则会自动调用 您正在尝试使用 尚未的类/接口 尚未定义.通过调用此函数 脚本引擎获得了最后 有机会在PHP之前加载类 失败并显示错误.

In PHP 5, this is no longer necessary. You may define an __autoload function which is automatically called in case you are trying to use a class/interface which hasn't been defined yet. By calling this function the scripting engine is given a last chance to load the class before PHP fails with an error.

示例:

function __autoload($class_name) {
    include $class_name . '.php';
}

$obj  = new MyClass1();
$obj2 = new MyClass2(); 

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