We can insert any media files in our post content by clicking the button ‘Upload/Insert’ from post editor. But If you need to use files for your WordPress plugin or theme settings, you have to either upload new files form your computer or using files from WordPress media library. You can create a file upload system with your plugin easily that will not well organized. But you can use WordPress media upload library instead. There is no documentation/guide for adding this media uploader functionality in your own settings page. Here I am writing a guide to use this media uploader very easily.
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