News Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

C. Sadeesh Kumar's Blog:
Smart File Type Detection Using PHP
August 29, 2011 @ 12:07:53

In a new post today C. Sadeesh Kumar has a quick tip to help your script detect file types without having to rely on the extension to be correct.

In most web applications today, there is a need to allow users to upload images, audio and video files. Sometimes, we also need to restrict certain types of files from being uploaded - an executable file being an obvious example. Security aside, one might also want to prevent users from misusing the upload facility, e.g. uploading copyrighted music files illegally and using the service to promote piracy! In this article, we'll look into a few ways in which we can achieve this.

The trick to his example is in using the Fileinfo PECL extension. With the help of this extension you can look inside the file and pick out the "magic bytes" (the first few bytes of a file) and see what MIME type the file really is. He includes a simple example of using the extension on a file and a file upload script that checks the type and handles the file accordingly.

0 comments voice your opinion now!
file type detection fileinfo extension pecl tutorial


blog comments powered by Disqus

Similar Posts

DevShed: Defining Public and Protected Methods with Member Visibility in PHP 5

Brian Swan's Blog: Performance Tuning PHP Apps on Windows with Wincache

PHPRiot.com: Zend Framework 101: Zend_Registry

Vidyut Luther\'s Blog: Where do you \"define\" your environment/global settings?

PHPMaster.com: Using Facebook’s Realtime Updates and Subscription API


Community Events





Don't see your event here?
Let us know!


laravel framework community wordpress api list interview bugfix podcast series release install introduction unittest configure library threedevsandamaybe application language developer

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework