How Can I Efficiently Determine File MIME Types in PHP?

Finding File MIME Type in PHP

In PHP, determining file MIME types is essential when working with various file types. For instance, in an index.php script that handles requests for different file types:

<?php
   include('/www/site'.$_SERVER['REQUEST_URI']);
?>

Extracting the MIME type of these files becomes necessary. There are a few methods available:

• Testing File Extension: Check the extension of the requested file to guess its type.
• Using File Information Functions: Leverage PHP functions like exif_imagetype() for images or the Fileinfo PECL extension for broader file type identification.
• External Library: Employ libraries like getID3 to determine MIME types for various file formats.

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