wat doe ik verkeerd iemand een idee

<?php
$servername = "localhost";
$username = "";
$password = "";
$dbname = "";

// Create connection
$con = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($con->connect_error) {
  die("Connection failed: " . $con->connect_error);
}

?> 

<?php
include("_include-connection.php"); 

if(isset($_SESSION['loginUserId']) AND is_numeric($_SESSION['loginUserId']) AND check_login() AND !isset($custom_date) AND !isset($custom_data) AND (!isset($nomysql) OR !$nomysql)) { 
    $extendedUserFields = ""; 
    if(isset($additionalRequiredUserFields) AND is_array($additionalRequiredUserFields)) { 
        foreach($additionalRequiredUserFields as $value) { 
            $extendedUserFields .= ", " . $value; 
        } 
    } 
    $query = "SELECT id, login, account, UNIX_TIMESTAMP(signup) AS signup, UNIX_TIMESTAMP(online) AS online, IP, " .  
    " WHERE id=".$_SESSION['loginUserId']." AND ua.uid=account" . " LIMIT 1"; 
     
    $query = mysqli_query($con, "object", null, 'User'); 
} 

?>