I would like to ask you, heroes, when you write with Php+myslq+appache file management skills

I would like to ask you heroes, you are writing with Php+myslq+appache file management skills
I am a beginner of PHP, now in the attempt to do a small project, but the face of a lot of PHP files before, feel very messy, so I would like to ask you heroes, you are writing with Php+myslq+appache what is the document management skills? Is it possible to store only the main page file in the folder where PHP hosts the main page? If you are creating a project folder, create a directory.

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Different folders have different functions to put the corresponding files
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Differentiated according to the role of the file. You can take a look at those open-source projects like Phpwind. It's not hard to learn the way people study. But it's better to get used to it.
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First: folders are divided by function.
Second: The integrated development environment, the directory structure at a glance.

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