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POHow to prevent an administrator from logging in twice?
 

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  1. POHow to prevent an administrator from logging in twice?
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    <p>I don't want to show the administrator the login page if they're already logged in. What should I do if I want to redirect the administrator to the homepage when they go to the administrator login page. For your information, I have included the <code>header.php</code> into every administrator pages after the administrator has logged in. Your help is very much appreciated! Thank you! </p> <p>Below shows a part of my <code>header.php</code> coding:</p> <pre><code>&lt;?php session_start(); if(!isset($_SESSION['name']) or (!isset($_SESSION['password'])) or $_SESSION['name'] == '' or $_SESSION['password'] == '' ) { header('Location: index.php'); } ?&gt; </code></pre> <p>Below shows my administrator login page coding:</p> <pre><code>&lt;form method="post" action="login_now.php" name="form1" id="form1" onSubmit="MM_validateForm('Name','','R','Password','','R','Security_code','','R');return document.MM_returnValue"&gt; &lt;table style="width: 100%;"&gt; &lt;tbody&gt; &lt;tr&gt; &lt;td style="text-align: center;" rowspan="4"&gt;&lt;img src="../admin/images/login.png" alt="Please enter your login details."&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt; Username&lt;span class="required"&gt;*&lt;/span&gt; &lt;br&gt; &lt;input type="text" class="form-control" style="width: 150px; height: 20px" name="Name" id="Name" class="inputstyle"/&gt; &lt;br&gt; &lt;br&gt; Password&lt;span class="required"&gt;*&lt;/span&gt; &lt;br&gt; &lt;input type="password" class="form-control" style="width: 150px; height: 20px" name="Password" id="Password" class="inputstyle"/&gt; &lt;br&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt; &lt;br&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td align="right" width="240px"&gt; &lt;input type="submit" value="Login" class="buttons" /&gt; </code></pre> <p>Below shows my <code>login_now.php</code> coding:</p> <pre><code>&lt;?php session_start(); ob_start(); include("../DBScripts/DB.php"); $adminName = $_POST['Name']; $adminPassword = $_POST['Password']; $Security = $_POST['Security_code']; $hidden = $_POST['Security_required']; $conn = dbConnect(); if (!$conn) die("Couldn't connect to MySQL"); $query = "select * from user where usernm='$adminName' and userpw='$adminPassword'"; $result = mysql_query($query, $conn); $row = mysql_fetch_array($result); if (mysql_num_rows($result) &gt; 0 &amp;&amp; $row['userty']== user &amp;&amp; $Security == $hidden) { $_SESSION['name'] = $adminName; $_SESSION['password'] = $adminPassword; header ('Location: ../Users/home_user.php'); } else if(mysql_num_rows($result) &gt; 0 &amp;&amp; $row['userty']== admin &amp;&amp; $Security == $hidden) { $_SESSION['name'] = $adminName; $_SESSION['password'] = $adminPassword; header('Location: adminindex.php'); } else { header('Location: index.php'); } ?&gt; </code></pre>
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    1. USuser2946964
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      1. VTDownMod
    1. CODo the opposite check on the login page?! *If already logged in, redirect to homepage...*
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      1. POHow to prevent an administrator from logging in twice?
      1. USdeceze
    2. CO[Do you see the big "DO NOT USE THIS" red box in the manual](http://php.net/manual/en/function.mysql-query.php)?
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      1. USta.speot.is
    3. CORedirect the admin back to `adminindex` if session exists.
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      1. USNil'z
 

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