What is the method of calling file class in php

This time I will show you how to make a calling file class in PHP, and what are the precautions for making a calling file class in PHP. The following is a practical case, let's take a look.

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First declare a class in a tool.php file:

        

         Copy after login
        
       

In another file main. PHP calls the method in the above class:

say(); echo $content; ?>

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