PHPFan questions

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• Is it possible to upload image to the server using Bootstrap's Modal dialog box, jQuery, AJAX and PHP? If yes how? If no what's the reason for it?
• What does the code $('body').on('hidden.bs.modal', '.modal', function (){....} do and when does it gets called?
• How to run a PHP program from command prompt on a Windows Machine?
• What does $.active means in following jQuery code? [duplicate]
• How to call the callable function in PHP?
• How to make the code written for image-resizing workable and optimized for all kinds of image extensions?
• How to add vertical menu items to Bootstrap popover?
• How to disable a submit button when AJAX request is in progress and enable it after receiving success AJAX response?

PHPFan answers