PHP / 9 Feb 2009
Smart File Type Detection Using PHP
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.
For those of us who travel often, we often end up accessing our emails and other confidential web accounts on public computers. In such circumstances, we are completely at the mercy of keyloggers and other malicious software that track our keystrokes and record our passwords.