How to use Google Drive API to upload files in my Drive (PHP)?

I want to make a webpage in which there will be an file input box, and the files which user uploads, should be saved into my Google Drive.

How do I achieve it using PHP?

I don't want to use composer

I need refreance to a good article with some indications

I checked on Google but I found articles to write on other's Drive, but not my own. Also, I checked the Drive API documentation, but I think its too professional for me! Please tell me how to make a simple uploading PHP page.

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