mime_content_type
    (PHP 4 >= 4.3.0, PHP 5)
mime_content_type -- Detect MIME Content-type for a file
Description
string 
mime_content_type ( string filename )
     Returns the MIME content type for a file as determined by using
     information from the magic.mime file. 
     Content types are returned in MIME format, like text/plain 
     or application/octet-stream.
    
     
Example 1. mime_content_type() example 
<?php echo mime_content_type('php.gif') . "\n"; echo mime_content_type('test.php'); ?>
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 The above example will output:  |