satishgaudo.com

/**
* getFileMimeType
* returns the mime type of the file
* @param string $sFilePath File path
* @return string mime type of the file
* @access public
*/
public function getFileMimeType($sFilePath)
{
exec('/usr/bin/file -i -b ' . realpath($sFilePath), $aOutput);
$sType = $aOutput[0];
$aMimeTypeDet = explode(';', $sType);
return trim($aMimeTypeDet[0]);
}