Example Analysis of Namespace and Auto-loading classes in PHP object-oriented programming

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The details are as follows:

Namespace

Avoid duplicate class names, resulting in errors.

How to call a class in a namespace

Use the use keyword

Using the following processing, you can call the class directly

\ indicates the global situation

Global.php

Output:

Hello from com\ getinstance\ util

Hello from global

Namespace plus {}

Output:

Hello from Debug

Global namespace

_ _ autoload automatically loads classes

ShopProduct.php

Output:

ShopProduct constructor

Further optimize the processing

Located in the folder business/ShopProduct.php

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