[PHP] Such Funktion funktioniert nicht (MSSQL)

<?php
                $connectionInfo = array( "Database"=>$DatenBankName);
                $conn = sqlsrv_connect( $serverName, $connectionInfo);
                if(isset($_POST['suchfeld'])){
                    $searchq = $_POST['suchfeld'];
                    $stmt = sqlsrv_query( $conn, "SELECT * FROM $dbListe WHERE Benutzername=(?)",array($searchq));
                    $count = sqlsrv_num_rows($stmt);
                    if($count == 0){
                        echo '<td><span style="color:#E23500"> No user found!</span></td><td><span style="color:#E23500"> No user found!</span></td><td><span style="color:#E23500"> No user found!</span></td><td><span style="color:#E23500"> No user found!</span></td><td><span style="color:#E23500"> No user found!</span></td><td><span style="color:#E23500"> No user found!</span></td>';
                    }else{
                        echo "fehler3";
                        while($row = sqlsrv_fetch_array( $stmt, SQLSRV_FETCH_ASSOC)){
                            $UName = $row['Benutzername'];
                            $ULevel = $row['Level'];
                            $ULevelEXP = $row['Erfahrungspunkte'];
                            $ULevelFame = $row['Ruf'];
                            $ULevelHLevel = $row['HeldenLVL'];
                            $ULevelHLevelXP = $row['HeldenXP'];
                            echo '<td>'.$UName.'</td>';
                        }
                    }
                }
                sqlsrv_close( $conn);
                ?>