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    <p>In line 54 (where the error is occurring)</p> <p>Change</p> <p><code>echo $_SESSION[loggedon];</code></p> <p>to</p> <p><code>echo $_SESSION['loggedon'];</code></p> <p>which means you forgot to include <code>'</code> in the session value. You should always include single quotes unless the value is a defined constant.</p> <p><strong>UPDATE</strong></p> <hr> <pre><code>&lt;?php session_start(); include 'connect.php'; echo "Hello World!"; echo $_SESSION['page']; $_SESSION['loggedon']=12345; $username=$_POST['username']; $password=$_POST['password']; $sql = "SELECT * FROM Users WHERE Username='".$username."'"; $result = mysql_query($sql) or die(mysql_error()); while ($row= mysql_fetch_array($result)) { if (($username=$row['Username'])&amp;&amp;($password=$row['Password'])) { $_SESSION['loggedon']=$row['AccessLevel']; $_SESSION['userid']=$row['UserID'];}} if ($_SESSION['loggedon']==12345) { $sql = "SELECT * FROM RedundantUsers WHERE Username='".$username."'"; $result = mysql_query($sql); while ($row= mysql_fetch_array($result)) { $_SESSION['loggedon']=$row['AccessLevel']; $_SESSION['userid']=$row['UserID']; $userid =$row['UserID']; $forename =$row['Forename']; $surname =$row['Surname']; $email =$row['Email']; $usernamec =$row['Username']; $access =$row['AccessLevel']; $sql = "INSERT INTO Users (UserID, Forename, Surname, Email, Username, AccessLevel) VALUES ('$userid', '$forename', '$surname', '$email', '$usernamec', '$access')"; if (!mysql_query($sql)) { die('Error: ' . mysql_error()); } $sql = "DELETE * FROM RedundantUsers WHERE Username='".$usernamec."'"; }} date_default_timezone_set('UTC'); $date = date("Y-m-d H:i:s"); global $usernamec; $sql = "UPDATE Users SET Datecreated='".$date."' WHERE Username='".$usernamec."'"; if (!@mysql_query($sql)) { die('Error: ' . mysql_error()); } echo $_SESSION[loggedon]; header('Location: /'.$_SESSION[page]); ?&gt; </code></pre>
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    1. POunexpected T-Variable in php code and cant figure out why
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    1. POunexpected T-Variable in php code and cant figure out why
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    1. COthat didn't fix it but thanks anyway. Also just checked that is line 60 where it says echo $_SESSION[loggedon];
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    2. COI think this line shouldn't be raising a "Unexpected T_VARIABLE" error. The php interpreter will assume that `loggedon` is a defined constant.
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    3. COdo the same thing for all your `SESSION[]` values. and it will be fixed
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