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This library provides basic functionality for parsing mime-types names and matching them against a list of media-ranges. See section 14.1 of RFC 2616 (the HTTP specification) for a complete explanation. More information on the library can be found in the article "Just use Media Types?"

This library was taken from the original mimeparse library on Google Project Hosting and has been cleaned up to conform to PSR-0, PSR-1, and PSR-2 standards. It also now has support for Composer. The Bitworking namespace is a nod to Joe Gregorio, the original author of this library.


Use Mimeparse to specify a list of media types your application supports and compare that to the list of media types the user agent accepts (via the HTTP Accept header; $_SERVER['HTTP_ACCEPT']). Mimeparse will give you the best match to send back to the user agent for your list of supported types or null if there is no best match.

$supportedTypes = array('application/xbel+xml', 'text/xml');
$httpAcceptHeader = 'text/*;q=0.5,*/*; q=0.1';
$mimeType = \Bitworking\Mimeparse::bestMatch($supportedTypes, $httpAcceptHeader);
echo $mimeType; // Should echo "text/xml"

You may also use Mimeparse to get the quality value of a specific media type when compared against a range of media types (from the Accept header, for example).

$httpAcceptHeader = 'text/*;q=0.3, text/html;q=0.7, text/html;level=1, text/html;level=2;q=0.4, *\/*;q=0.5';
$quality = \Bitworking\Mimeparse::quality('text/html', $httpAcceptHeader);
echo $quality; // Should echo 0.7


The preferred method of installation is via Packagist, as this provides the PSR-0 autoloader functionality. The following composer.json will download and install the latest version of the Mimeparse library into your project:

    "require": {
        "bitworking/mimeparse": "*"