What is autoload in PHP?

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Autoloading is the process of automatically loading PHP classes without explicitly loading them with the require() , require_once() , include() , or include_once() functions. It's necessary to name your class files exactly the same as your classes.

As of PHP 7.2.0 the __autoload() function has been deprecated. Now it is recommended to use the spl_autoload_register() for that purpose instead.

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