Mein Code

DB Connection:

<?php
function connect(){
        session_start();
        $server = "host";
        $benutzer = "Benutzer";
        $pass = "pass";
        $_SESSION['tabelle'] = "tabelle";
        $conn = mysqli_connect($server, $benutzer, $pass, $_SESSION['tabelle']);
return $conn;
}
function getAllUsers($conn){
        $sql = "SELECT * FROM `users`";

        $dbResult = mysqli_query($conn, $sql);
        $userArry = array();
        while($row = mysqli_fetch_array($dbResult)){
                $user = array();
                $user['userName'] = $row['userName'];
                $user['userPassword'] = $row['userPassword'];
                $user['userID'] = $row['userID'];
                $userArry[] = $user;
        }
        return $userArry;
}

function getUser($conn, $userId){
        $sql = "SELECT * FROM `users` WHERE `userID` = ".mysqli_real_escape_string($conn, $userId);

        $dbResult = mysqli_query($conn, $sql);
        while($row = mysqli_fetch_array($dbResult)){
                $user = array();
                $user['userName'] = $row['userName'];
                $user['userPassword'] = $row['userPassword'];
                $user['userID'] = $row['userID'];
                return $user;
        }

        return NULL;
}
?>






Mein Code der den Error Ausgibt:

<?php
include("helper.php");
$database = connect();
$user = getAllUsers($database);

            $sql = "SELECT * FROM ".$_SESSION['klasse']."";
            $dbResult = mysqli_query($database, $sql);
            while($row = mysqli_fetch_array($dbResult)){
                $chatEntry = array();
                $chatEntry['userID'] = $row['userID'];
                $chatEntry['userText'] = $row['text'];
                $chatEntry['Time'] = $row['time'];
                $user = getUser($database, $chatEntry['userID']);
                $chatText = strip_tags($chatEntry['userText'], '<a></a><img>');
                $urlsuch[]="/([^]_a-z0-9-=\"'\/])((https?|ftp):\/\/|www\.)([^ \r\n\(\)\^\$!`\"'\|\[\]\{\}<>]*)/si";
                $urlsuch[]="/^((https?|ftp):\/\/|www\.)([^ \r\n\(\)\^\$!`\"'\|\[\]\{\}<>]*)/si";
                $urlreplace[]="\\1[URL]\\2\\4[/URL]";
                $urlreplace[]="[URL]\\1\\3[/URL]";
                $chatText = preg_replace($urlsuch, $urlreplace, $chatText);
                $chatText = preg_replace("/\[URL\]www.(.*?)\[\/URL\]/si", "<a target=\"_blank\" href=\"http://www.\\1\">www.\\1</a>", $chatText);
                $chatText = preg_replace("/\[URL\](.*?)\[\/URL\]/si", "<a target=\"_blank\" href=\"\\1\">\\1</a>", $chatText);
                $chatText = preg_replace("/(http:\/\/)?(.*\.(de|com|at|net)[^\s]*)/","<a target='_blank' href='http:\/\/$2'>$2</a>", $chatText);
                $chatText = preg_replace("/(:D)/","<img src='img/smilie1.png' style='height:20px; width:20px;'>", $chatText);
                $chatText = preg_replace("/(:\()/","<img src='img/smilie2.png' style='height:20px; width:20px;'>", $chatText);
                $chatText = preg_replace("/(\(creeper\))/","<img src='img/smilie3.png' style='height:20px; width:20px;'>", $chatText);
                $chatText = preg_replace("/(\;\))/","<img src='img/smilie4.png' style='height:20px; width:20px;'>", $chatText);
                $chatText = preg_replace("/(\(fu)\)/","<img src='img/smilie5.png' style='height:20px; width:22px;'>", $chatText);
                echo $user['userName'] . ": <lable style='color:#D8D8D8'>" . $chatText . " </lable>~" . $chatEntry['Time'] . "~";
                echo "<br>";
            }
?>