Detailed explanation of the distinction between require, include, and use in PHP

The difference between require and include is that the error is reported when the file does not exist. The former stops the script and the latter continues execution. They all import a file, execute the imported file after the introduction, and continue to execute the current file after the execution is completed.
So the parameter value is the file address, use the left slash "/";

use is to use the namespace, so the parameter value is the namespace, use the right slash "\"

Namespaces and file paths do not necessarily correspond directly!

The above is the distinction between require, include, and use in PHP that I compiled for you. I hope it will be helpful to you in the future.

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