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Editorial Team
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Asked: 2026-05-12T13:31:03+00:00

From php.net : In PHP 5, this is no longer necessary. You may define

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From php.net:

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.

Now I am wanting to know, is it bad practice to solely use __autoload to load the appropriate classes on a dynamic site?

The way my site is setup is to include files into the index.php file, for example http://www.site.com/index.php?p=PAGE-I-WANT-TO-LOAD

So if I am on the forums section or the blogs section of my site, I want only appropriate classes and functions to be loaded, so I use autoload but I never include a file manually, should I be using __autoload as a last resort or is what I am doing fine even on a high traffic system?

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  1. Editorial Team

    Bad? No. __autoload() is one of my favorite additions to PHP 5. It removes the responsibility (and annoyance) of manually having to include/require the class files necessary to your application. That being said, it’s up to you as the developer to ensure that only the ‘appropriate classes’ are loaded. This is easily done with a structured naming scheme and directory structure. There are plenty examples online of how to properly use __autoload(), do a Google search and you’ll find plenty of information.

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