Php file uploading and downloading

Upload and download file PHP. Please Sign up or sign in to vote. See more: PHP. Hy I have a password policy project from my university which is almost complete but I have to ask a question.

I want to decide to upload and download file option on user profile page. In that project I use php, mysql and other. Posted Sep am Member Add a Solution. Top Rated Most Recent. Accept Solution Reject Solution. For uploading file only you need to use PHP. But for maintaining information regarding file u need MySQL. For example for one student the Student Id 1 and he or she uploading a ProjectFile. StudentID : 1 2. After the file is downloaded, we update the downloads count for that particular file in the database.

That's about it with file upload and download. You can further customize it to build cool PHP applications. Thanks very much for following. Let me know what you think about this article in the comments section below, if you please. Privacy Policy Terms and conditions About Us. Toggle navigation. Tutorials Contact Sign Up Login.

Related posts. Subscribe to get updates. Popular posts. The code first makes sure the file uploaded without any errors. Finally, there is a call to chmod to make sure sane access permissions are set on the new file. You may intend for a user to upload a picture of himself for a profile page, but what if he tries to upload a specially-crafted, virus-laden executable instead?

One is to verify the type of the uploaded file is what it should be. The array returned by getimagesize will contain the image type if it is recognized. For non-image files, you can use exec to invoking the unix file utility. Another step you can take is to impose hard limits on the total size of the POST request and the number of files that can be uploaded. These three directives help protect your site against attacks that try to disrupt its availability by causing heavy network traffic or system load.

A third step you can take to minimize your risk is to scan uploaded files with a virus scanner. Discrete Mathematics. Ethical Hacking. Computer Graphics. Software Engineering. Web Technology. Cyber Security.

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