Probleme mit Hide Links to Guest!

PHP-Code:
<?php
/**
 * Hide Links to Guests
 * Copyright v1.2 DragonFever
 */


function hltg_info()
{
    return array(
        "name"        => "Hide Links to Guests",
        "description"    => "Don't show links in the messages to guests.",
        "website"    => "http://www.mybbdestek.com/",
        "author"    => "DragonFever",
        "authorsite"    => "http://www.dragonfever.info/",
        "version"    => "1.2",
    );
}

function hltg_activate()
{
    global $db, $viewing;
    
    $hltg_group = array(
        "gid"            => "NULL",
        "name"            => "Hide Links to Guests",
        "title"            => "Hide Links to Guests",
        "description"    => "Settings for Hide Links to Guests.",
        "disporder"        => "4",
        "isdefault"        => "no",
    );
    
    $db->insert_query(TABLE_PREFIX."settinggroups", $hltg_group);
    $gid = $db->insert_id();
    
    
    $hltg_setting_1 = array(
        "sid"            => "NULL",
        "name"            => "hltg",
        "title"            => "Showing Text",
        "description"    => "The following text will show to guests instead of links",
        "optionscode"    => "textarea",
        "value"            => 'You Cannot View the Links Before Login the Site. Please Login or Register Our Site..',
        "disporder"        => '1',
        "gid"            => intval($gid),
    );

    $db->insert_query(TABLE_PREFIX."settings", $hltg_setting_1);
    rebuild_settings();
    
    $fh = fopen('../inc/class_parser.php', "r") or cperror("Could not open file!"); //OPEN FILE
    $data = fread($fh, filesize('../inc/class_parser.php')) or cperror("Could not read file!"); //MAKE TEMPORARY STRING
    fclose($fh); //CLOSE FILE AGAIN
    $newdata = preg_replace('#'.preg_quote('// Replace MyCode if requested.
        if($options[\'allow_mycode\'] != "no")
        {
            $message = $this->parse_mycode($message, $options);
        }').'#','// Replace MyCode if requested.
        if($options[\'allow_mycode\'] != "no")
        {
            // Ziyaretciler Linki Goremez Eklentisi By DragonFever <mhanyak@hotmail.com>
            if($mybb->user[\'usergroup\'] != "1")
        {
            $message = $this->parse_mycode($message, $options);
        }else{
            $message = $this->parse_mycode($message, $options);
            $message = preg_replace("!<a[^>]*(http|www)(.*)</a>!siU", "<font color=red><b>{$mybb->settings[\'hltg\']}</b></font>", $message);
        }
        }',$data); //REPLACE IN STRING
    $fw = fopen('../inc/class_parser.php', "w") or cperror('Could not open file!'); //OPEN FILE AGAIN
    $fb = fwrite($fw, $newdata) or cperror('Could not write to file'); //WRITE STRING TO FILE
    fclose($fw); //CLOSE FILE AGAIN    
}

function hltg_deactivate()
{
    global $db;
        //revert index.php must be chmoded 777
    $fh = fopen('../inc/class_parser.php', "r") or cperror("Could not open file!"); //OPEN FILE
    $data = fread($fh, filesize('../inc/class_parser.php')) or cperror("Could not read file!"); //MAKE TEMPORARY STRING
    fclose($fh); //CLOSE FILE AGAIN
    $newdata = preg_replace('#'.preg_quote('// Replace MyCode if requested.
        if($options[\'allow_mycode\'] != "no")
        {
            // Ziyaretciler Linki Goremez Eklentisi By DragonFever <mhanyak@hotmail.com>
            if($mybb->user[\'usergroup\'] != "1")
        {
            $message = $this->parse_mycode($message, $options);
        }else{
            $message = $this->parse_mycode($message, $options);
            $message = preg_replace("!<a[^>]*(http|www)(.*)</a>!siU", "<font color=red><b>{$mybb->settings[\'hltg\']}</b></font>", $message);
        }
        }').'#','// Replace MyCode if requested.
        if($options[\'allow_mycode\'] != "no")
        {
            $message = $this->parse_mycode($message, $options);
        }',$data); //REPLACE IN STRING
    $fw = fopen('../inc/class_parser.php', "w") or cperror('Could not open file!'); //OPEN FILE AGAIN
    $fb = fwrite($fw, $newdata) or cperror('Could not write to file'); //WRITE STRING TO FILE
    fclose($fw); //CLOSE FILE AGAIN
    
    $db->query("DELETE FROM ".TABLE_PREFIX."settings WHERE name='hltg'");
    $db->query("DELETE FROM ".TABLE_PREFIX."settinggroups WHERE name='Hide Links to Guests'");
    rebuild_settings();

}

if(!function_exists("rebuild_settings"))
{
    function rebuild_settings()
    {
        global $db;
        $query = $db->query("SELECT * FROM ".TABLE_PREFIX."settings ORDER BY title ASC");
        while($setting = $db->fetch_array($query))
        {
            $setting['value'] = addslashes($setting['value']);
            $settings .= "\$settings['".$setting['name']."'] = \"".$setting['value']."\";\n";
        }
        $settings = "<?php\n/*********************************\ \n  DO NOT EDIT THIS FILE, PLEASE USE\n  THE SETTINGS EDITOR\n\*********************************/\n\n$settings\n?>";
        $file = fopen(MYBB_ROOT."/inc/settings.php", "w");
        fwrite($file, $settings);
        fclose($file);
    }
}
?>