private function read_doc($filename) {
    $fileHandle = fopen($filename, "r");
    var_dump($filename);
    $line = fread($fileHandle, filesize($filename));
    $lines = explode(chr(0x0D), $line);
    $outtext = "";
    foreach ($lines as $thisline) {
        $pos = strpos($thisline, chr(0x00));
        if (($pos !== FALSE) || (strlen($thisline) == 0)) {

        } else {
            $outtext .= $thisline . " ";
        }
    }
    $outtext = preg_replace("/[^a-zA-Z0-9s,.-nrt@/_()]/", "", $outtext);
    return $outtext;
}

if($ext == 'doc'){
    if(file_exists($filename) ) {
    if(($fh = fopen($filename, 'r')) !== false ) {
    $headers = fread($fh, 0xA00);
    $n1 = ( ord($headers[0x21C]) - 1 );
    $n2 = ( ( ord($headers[0x21D]) - 8 ) * 256 );
    $n3 = ( ( ord($headers[0x21E]) * 256 ) * 256 );
    $n4 = ( ( ( ord($headers[0x21F]) * 256 ) * 256 ) * 256 );
    $textLength = ($n1 + $n2 + $n3 + $n4);
    $content_of_file1 = fread($fh, $textLength);
    $content_of_file = strtolower($content_of_file1);

    }
}