Help! CMS problemen

<?php
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['login']))
{
    // De absolute path naar dit bestand zijn map
    $sAbsolutePath = 'http://www.example.com';
    
    $aKeys = array('phpbb', 'wikimedia', 'joomla');
    
    // Geen &amp; plaatsen, want dat is alleen als het in html staat ;-)
    $aActions = array
    (
        'phpbb' => 'forums/ucp.php?mode=login',
        'wikimedia' => 'wiki/index.php?title=Special:Userlogin&action=submitlogin&type=login&returnto=Main_Page',
        'joomla' => 'index.php'
    );
    
    $aFieldNames = array
    (
        'phpbb' => array
        (
            'username' => 'username',
            'password' => 'password',
            'remember' => 'autologin',
            'login' => 'login'
        ),
        'wikimedia' => array
        (
            'username' => 'wpName',
            'password' => 'wpPassword',
            'remember' => 'wpRemember',
            'login' => 'wpLoginattempt'
        ),
        'joomla' => array
        (
            'username' => 'username',
            'password' => 'passwd',
            'remember' => 'remember',
            'login' => 'Submit'
        )
    );
    
    foreach ($aKeys as $sKey)
    {
        $sUrl = $sAbsolutePath.'/'.$aActions[$sKey];
        
        $aNames = $aFieldNames[$sKey];
        
        $aNewPost = array();
        
        foreach ($_POST as $sKey => $mValue)
        {
            if (isset($aNames[$sKey]))
            {
                $aNewPost[$aNames[$sKey]] = $mValue;
            }
        }
        
        $sPostData = http_build_query($aNewPost, null, '&');
        
        // Bezoek de pagina, met POST variables
        $oRequest = new HttpRequest($sUrl);
        $oRequest->sendRequest('POST', $sPostData);
    }
}
?>
<form method="post">
    <p>
        <label for="username">Username</label>
        <br />
        <input type="text" name="username" />
    </p>
    <p>
        <label for="password">Password</label>
        <br />
        <input type="password" name="password" />
    </p>
    <p>
        <label for="remember">Remember me</label><input type="checkbox" name="remember" />
    </p>
    <p>
        <input type="submit" name="login" value="Login" />
    </p>
</form>

<?php
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['login']))
{
    // De absolute path naar dit bestand zijn map
    $sAbsolutePath = 'http://www.example.com';
 
    $aKeys = array('phpbb', 'wikimedia', 'joomla');
 
    // Geen &amp; plaatsen, want dat is alleen als het in html staat ;-)
    $aActions = array
    (
        'phpbb' => 'forums/ucp.php?mode=login',
        'wikimedia' => 'wiki/index.php?title=Special:Userlogin&action=submitlogin&type=login&returnto=Main_Page',
        'joomla' => 'index.php'
    );
 
    $aFieldNames = array
    (
        'phpbb' => array
        (
            'username' => 'username',
            'password' => 'password',
            'remember' => 'autologin',
            'login' => 'login'
        ),
        'wikimedia' => array
        (
            'username' => 'wpName',
            'password' => 'wpPassword',
            'remember' => 'wpRemember',
            'login' => 'wpLoginattempt'
        ),
        'joomla' => array
        (
            'username' => 'username',
            'password' => 'passwd',
            'remember' => 'remember',
            'login' => 'Submit'
        )
    );
 
    foreach ($aKeys as $sKey)
    {
        $sUrl = $sAbsolutePath.'/'.$aActions[$sKey];
 
        $aNames = $aFieldNames[$sKey];
 
        $aNewPost = array();
 
        foreach ($_POST as $sKey => $mValue)
        {
            if (isset($aNames[$sKey]))
            {
                $aNewPost[$aNames[$sKey]] = $mValue;
            }
        }
 
        $sPostData = http_build_query($aNewPost, null, '&');
 
        // Bezoek de pagina, met POST variables
        $oRequest = new HttpRequest($sUrl);
        $oRequest->sendRequest('POST', $sPostData);
    }
}
?>
<form method="post">
    <p>
        <label for="username">Username</label>
        <br />
        <input type="text" name="username" />
    </p>
    <p>
        <label for="password">Password</label>
        <br />
        <input type="password" name="password" />
    </p>
    <p>
        <label for="remember">Remember me</label><input type="checkbox" name="remember" />
    </p>
    <p>
        <input type="submit" name="login" value="Login" />
    </p>
</form>

if ($sKey === 'joomla')
{
    $aNewPost = array_merge($aNewPost, array('veldnaam' => 'waarde'));
}

if ($sKey === 'joomla')
{
    $aNewPost = array_merge($aNewPost, array('veldnaam' => 'waarde'));
}