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// Mime Type Checker
function get_mime($filename, $mode=0){

    // mode 0   = full check
    // mode 1   = extension check only

    $mime_types = array(
        'txt'       => 'text/plain',
        'htm'       => 'text/html',
        'html'      => 'text/html',
        'php'       => 'text/html',
        'css'       => 'text/css',
        'js'        => 'application/javascript',
        'json'      => 'application/json',
        'xml'       => 'application/xml',
        'swf'       => 'application/x-shockwave-flash',
        'flv'       => 'video/x-flv',

        // images
        'png'       => 'image/png',
        'jpe'       => 'image/jpeg',
        'jpeg'      => 'image/jpeg',
        'jpg'       => 'image/jpeg',
        'gif'       => 'image/gif',
        'bmp'       => 'image/bmp',
        'ico'       => 'image/vnd.microsoft.icon',
        'tiff'      => 'image/tiff',
        'tif'       => 'image/tiff',
        'svg'       => 'image/svg+xml',
        'svgz'      => 'image/svg+xml',

        // archives
        'zip'       => 'application/zip',
        'rar'       => 'application/x-rar-compressed',
        'exe'       => 'application/x-msdownload',
        'msi'       => 'application/x-msdownload',
        'cab'       => 'application/vnd.ms-cab-compressed',

        // audio/video
        'mp3'       => 'audio/mpeg',
        'qt'        => 'video/quicktime',
        'mov'       => 'video/quicktime',

        // adobe
        'pdf'       => 'application/pdf',
        'psd'       => 'image/vnd.adobe.photoshop',
        'ai'        => 'application/postscript',
        'eps'       => 'application/postscript',
        'ps'        => 'application/postscript',

        // ms office
        'doc'       => 'application/msword',
        'rtf'       => 'application/rtf',
        'xls'       => 'application/vnd.ms-excel',
        'ppt'       => 'application/vnd.ms-powerpoint',
        'docx'      => 'application/msword',
        'xlsx'      => 'application/vnd.ms-excel',
        'pptx'      => 'application/vnd.ms-powerpoint',


        // open office
        'odt'       => 'application/vnd.oasis.opendocument.text',
        'ods'       => 'application/vnd.oasis.opendocument.spreadsheet',
    );

    $ext = strtolower(array_pop(explode('.',$filename)));

    if(function_exists('mime_content_type') && $mode==0){
        $mimetype = mime_content_type($filename);
        return $mimetype;
    }

    if(function_exists('finfo_open') && $mode==0){
        $finfo = finfo_open(FILEINFO_MIME);
        $mimetype = finfo_file($finfo, $filename);
        finfo_close($finfo);
        return $mimetype;
    }
    elseif(array_key_exists($ext, $mime_types)){
        return $mime_types[$ext];
    }
    else {
        return 'application/octet-stream';
    }
}