No response from server : faulty php script?

So I'm continuing to work on this login.php script

<?php

$link = new MySQLi (localhost, Maelhann, userpassword, Logindata2256 ) ;

if ( mysqli_connect_error() ){

$logmessage = 'MySQL error : ' . mysqli_connect_error() ; 
die('could not connect to database');
}

$Email = $_POST['Email'];
$Password = $_POST['Password'];

 if ( int mysqli_result::$num_rows() == 1 ){

$_SESSION["Email"];
$_SESSION["Password"];
header("location:Newaccount.html");
 }
else{
echo "wrong username or password" ;

}

?>

but all I get when trying to log in is a blank page... any Idea where I could have failed?