Gekürzte Beitrage nur in Startpost

PHP-Code:
<?php

if(!defined("IN_MYBB"))
{
   die("Direct initialization of this file is not allowed.");
}

function shortmessage_info()
{
global $db, $lang;

shortmessage_lang();
   return array(
       "name" => $db->escape_string($lang->shortmessage),
       "description" => $db->escape_string($lang->shortmessage_description),
"website" => "http://freemybb.de",
       "author" => "MrBrechreiz",
       "authorwebsite" => "http://freemybb.de",
       "version" => "1.0",
       "compatibility" => "18*"
   );
}

function shortmessage_lang()
{
global $lang;

$lang->load('shortmessage',false,true);
$l['shortmessage'] = "Gekürzte Beiträge";
$l['shortmessage_description'] = "Hiermit werden Beiträge für die Gäste gekürzt.";
$l['plugin_status'] = "Plugin Status";
$l['plugin_status_desc'] = "Plugin ein, oder ausschalten ?";
$l['lenght'] = "Zeichenlänge";
$l['lenght_desc'] = "Trage die Anzahl der sichtbaren Zeichen ein, die ein Gast sehen darf.";
$l['forum'] = "Foren ausschließen";
$l['forum_desc'] = "In welchem Forum soll die maximale Zeichenlänge für Gäste nicht beschränkt sein ? Trage die Foren-ID ein. Mehrere mit einem Komma (,) trennen.";

foreach($l as $key=>$val)
{
if(!$lang->$key)
{
$lang->$key=$val;
}
}
}

function shortmessage_activate()
{
   global $db, $mybb, $lang;

shortmessage_lang();

   $setting_group = array(
       'name' => 'shortmessage',
       'title' => $db->escape_string($lang->shortmessage),
       'description' => $db->escape_string($lang->shortmessage_description),
       'disporder' => 102,
       'isdefault' => 0
   );
   $gid = $db->insert_query("settinggroups", $setting_group);

$setting_array = array(
"name" => "shortmessage_status",
"title" => $db->escape_string($lang->plugin_status),
"description" => $db->escape_string($lang->plugin_status_desc),
"optionscode" => "onoff",
"value" => "1",
"disporder" => "1",
"gid" => (int)$gid
);
$db->insert_query('settings', $setting_array);

   $setting_array = array(
"name" => "shortmessage_lenght",
       "title" => $db->escape_string($lang->lenght),
       "description" => $db->escape_string($lang->lenght_desc),
       "optionscode" => "text",
       "value" => "300",
       "disporder" => "2",
"gid" => (int)$gid
   );
$db->insert_query('settings', $setting_array);

$setting_array = array(
"name" => "shortmessage_forum",
       "title" => $db->escape_string($lang->forum),
       "description" => $db->escape_string($lang->forum_desc),
       "optionscode" => "forumselect",
       "value" => "",
       "disporder" => "2",
"gid" => (int)$gid
   );
$db->insert_query('settings', $setting_array);

   rebuild_settings();
}

function shortmessage_deactivate()
{
   global $db;

$db->query("DELETE FROM ".TABLE_PREFIX."settinggroups WHERE name='shortmessage'");
$db->query("DELETE FROM ".TABLE_PREFIX."settings WHERE name='shortmessage_status'");
$db->query("DELETE FROM ".TABLE_PREFIX."settings WHERE name='shortmessage_lenght'");
$db->query("DELETE FROM ".TABLE_PREFIX."settings WHERE name='shortmessage_forum'");

rebuild_settings();
}

$plugins->add_hook("postbit", "shortmessage_run");
function shortmessage_run(&$post)
{
global $mybb, $fid, $lang, $parser, $message;

$lang->load('index');

if($mybb->settings['shortmessage_status'] != 0 && $mybb->settings['shortmessage_forum'] != -1 && $mybb->user['uid'] == 0)
{
if(!empty($mybb->settings['shortmessage_forum']))
{
require_once MYBB_ROOT.'inc/class_parser.php';
$parser = new postParser;

$parser_options = array(
"allow_html" => 1,
"allow_mycode" => 1,
"allow_smilies" => 1,
"allow_imgcode" => 1,
"allow_videocode" => 1,
"filter_badwords" => 1
);

if(!in_array($fid, explode(',', $mybb->settings['shortmessage_forum'])) && $mybb->settings['shortmessage_lenght'] < strlen(trim($post['message'])))
{
$post['message'] = substr(trim($post['message']), 0, $mybb->settings['shortmessage_lenght'])."..." . " <br /><br />[b]...mehr lesen ? Dann bitte <a href=\"{$mybb->settings['bburl']}/member.php?action=login\" class=\"login\">{$lang->welcome_login}</a>  oder <a href=\"{$mybb->settings['bburl']}/member.php?action=register\" class=\"register\">{$lang->welcome_register}</a> ! [/b]";

if(!empty($parser_options['allow_mycode']) && $mybb->settings['allowcodemycode'] == 1)
{
// This code is reserved and could break codes
$message = str_replace("<mybb-code>\n", "<mybb_code>\n", $message);

preg_match_all("#\[(code|php)\](.*?)\[/\\1\](\r\n?|\n?)#si", $message, $code_matches, PREG_SET_ORDER);
$message = preg_replace("#\[(code|php)\](.*?)\[/\\1\](\r\n?|\n?)#si", "<mybb-code>\n", $message);
}

if(empty($parser_options['allow_html']))
{
$message = $parser->parse_html($message);
$message = str_replace("&lt;mybb-code&gt;\n", "<mybb-code>\n", $message);
}
else
{
// Replace base, meta,script and style tags in our post - these are > dangerous <
$message = preg_replace('#<(/?)(base|meta|script|style)([^>]*)>#i', '&lt;$1$2$3&gt;', $message);
$message = $parser->fix_javascript($message);

$find = array("<br />\n", "<br>\n");
$replace = array("\n", "\n");
$message = str_replace($find, $replace, $message);
}

$post['message'] = $parser->parse_message($post['message'], $parser_options);
}
return $post;
}
}
}
?>