Parse error: syntax error, unexpected T_STRING with XAMPP

I am following the http://www.raywenderlich.com/13511/how-to-create-an-app-like-instagram-with-a-web-service-backend-part-12#comments tutorial. I opened an XAMPP server and when I opened http://localhost/iReporter because iReporter is the name of the folder and the error was

Parse error: syntax error, unexpected T_STRING in /Applications/XAMPP/xamppfiles/htdocs/iReporter/lib.php on line 5

here is the code for lib.php:

<?

//setup db connection

$link = mysqli_connect("localhost","root","")

mysqli_select_db($link, "iReport");

//executes a given sql query with the params and returns an array as result function
query() {

global $link;

$debug = false;

//get the sql query
$args = func_get_args();
$sql = array_shift($args);
//secure the input
for ($i=0;$i<count($args);$i++) {
    $args[$i] = urldecode($args[$i]);
    $args[$i] = mysqli_real_escape_string($link, $args[$i]);
}

//build the final query
$sql = vsprintf($sql, $args);

if ($debug) print $sql;

//execute and fetch the results
$result = mysqli_query($link, $sql);
if (mysqli_errno($link)==0 && $result) {

    $rows = array();
    if ($result!==true)
    while ($d = mysqli_fetch_assoc($result)) {
        array_push($rows,$d);
    }

    //return json
    return array('result'=>$rows);

} else {

    //error
    return array('error'=>'Database error');
}

}

//loads up the source image, resizes it and saves with -thumb in the file name function thumb($srcFile, $sideInPx) {

$image = imagecreatefromjpeg($srcFile);

$width = imagesx($image);

$height = imagesy($image);

$thumb = imagecreatetruecolor($sideInPx, $sideInPx);

imagecopyresized($thumb,$image,0,0,0,0,$sideInPx,$sideInPx,$width,$height);

imagejpeg($thumb, str_replace(".jpg","-thumb.jpg",$srcFile), 85);

imagedestroy($thumb); imagedestroy($image); }

?>

What is my problem? Please Help!

--Edit--

now it says that there is an error with line 35 when I changed $link = mysqli_connect("localhost","root","") to $link = mysqli_connect("localhost","root","");!