/includes/bbcode.php

Large files files are truncated, but you can click here to view the full file

<?php
/**
*
* @package Icy Phoenix
* @version $Id$
* @copyright (c) 2008 Icy Phoenix
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/

/**
*
* @Extra credits for this file
* Vjacheslav Trushkin (http://www.stsoftware.biz)
*
*/

if (!defined('IN_ICYPHOENIX'))
{
	die('Hacking attempt');
}

/*

=================
Includes
=================

include_once(IP_ROOT_PATH . 'includes/bbcode.' . PHP_EXT);

=================
Globals
=================

global $bbcode;

=================
BBCode Parsing
=================

$text = $bbcode->parse($text);

=================
BBCode Conditions
=================

$bbcode->allow_html = ($user->data['user_allowhtml'] && $config['allow_html']) ? true : false;
$bbcode->allow_bbcode = ($user->data['user_allowbbcode'] && $config['allow_bbcode']) ? true : false;
$bbcode->allow_smilies = ($user->data['user_allowsmile'] && $config['allow_smilies']) ? true : false;

=================

$html_on = ($user->data['user_allowhtml'] && $config['allow_html']) ? 1 : 0 ;
$bbcode_on = ($user->data['user_allowbbcode'] && $config['allow_bbcode']) ? 1 : 0 ;
$smilies_on = ($user->data['user_allowsmile'] && $config['allow_smilies']) ? 1 : 0 ;

$bbcode->allow_html = $html_on;
$bbcode->allow_bbcode = $bbcode_on;
$bbcode->allow_smilies = $smilies_on;

=================

$bbcode->allow_html = ($config['allow_html'] ? true : false);
$bbcode->allow_bbcode = ($config['allow_bbcode'] ? true : false);
$bbcode->allow_smilies = ($config['allow_smilies'] ? true : false);

=================

$bbcode->allow_html = (($config['allow_html'] && $row['enable_bbcode']) ? true : false);
$bbcode->allow_bbcode = (($config['allow_bbcode'] && $row['enable_bbcode']) ? true : false);
$bbcode->allow_smilies = (($config['allow_smilies'] && $row['enable_smilies']) ? true : false);

=================

$bbcode->allow_html = ($config['allow_html'] && $postrow[$i]['enable_bbcode'] ? true : false);
$bbcode->allow_bbcode = ($config['allow_bbcode'] && $postrow[$i]['enable_bbcode'] ? true : false);
$bbcode->allow_smilies = ($config['allow_smilies'] && $postrow[$i]['enable_smilies'] ? true : false);

=================

=================================
Acronyms, Autolinks
=================================

$text = $bbcode->acronym_pass($text);
$text = $bbcode->autolink_text($text, $forum_id);
====================


*/

// If included via function we need to make sure to have the requested globals...
global $db, $cache, $config, $lang;

// To use this file outside Icy Phoenix you need to comment the define below and remove the check on top of the file.
define('IS_ICYPHOENIX', true);
if(defined('IS_ICYPHOENIX'))
{
	// Include moved to functions... to avoid including wrong lang file ($config['default_lang'] is only assigned after session request)
	//setup_extra_lang(array('lang_bbcb_mg'));
}
else
{
	if (!defined('IP_ROOT_PATH')) define('IP_ROOT_PATH', './../');
	if (!defined('PHP_EXT')) define('PHP_EXT', substr(strrchr(__FILE__, '.'), 1));
	$config['allow_all_bbcode'] = 0;
	$config['allow_html'] = false;
	$config['allow_bbcode'] = true;
	$config['allow_smilies'] = true;
	$config['default_lang'] = 'english';
	$config['cookie_secure'] = 0;
	$config['server_name'] = 'icyphoenix.com';
	$config['script_path'] = '/';
	$config['liw_enabled'] = 0;
	$config['liw_max_width'] = 0;
	$config['thumbnail_cache'] = 0;
	$config['thumbnail_posts'] = 0;
	$config['thumbnail_highslide'] = 0;
	$config['disable_html_guests'] = 0;
	$config['quote_iterations'] = 3;
	$config['switch_bbcb_active_content'] = 1;
	$user->data['is_bot'] = false;
	$user->data['session_logged_in'] = 0;
	$lang['OpenNewWindow'] = 'Open in new window';
	$lang['Click_enlarge_pic'] = 'Click to enlarge the image';
	$lang['Links_For_Guests'] = 'You must be logged in to see this link';
	$lang['Quote'] = 'Quote';
	$lang['Code'] = 'Code';
	$lang['OffTopic'] = 'Off Topic';
	$lang['ReviewPost'] = 'Review Post';
	$lang['wrote'] = 'wrote';
	$lang['Description'] = 'Description';
	$lang['Download'] = 'Download';
	$lang['Hide'] = 'Hide';
	$lang['Show'] = 'Show';
	$lang['Select'] = 'Select';
	$lang['xs_bbc_hide_message'] = 'Hidden';
	$lang['xs_bbc_hide_message_explain'] = 'This message is hidden, you have to answer this topic to see it.';
	$lang['DOWNLOADED'] = 'Downloaded';
	$lang['FILESIZE'] = 'Filesize';
	$lang['FILENAME'] = 'Filename';
	$lang['Not_Authorized'] = 'Not Authorized';
	$lang['FILE_NOT_AUTH'] = 'You are not authorized to download this file';
}

$server_protocol = !empty($config['cookie_secure']) ? 'https://' : 'http://';
$local_urls = array(
	$server_protocol . 'www.' . $config['server_name'] . $config['script_path'],
	$server_protocol . $config['server_name'] . $config['script_path']
);

if (function_exists('create_server_url'))
{
	$server_url = create_server_url();
}
else
{
	$host = getenv('HTTP_HOST');
	$host = (!empty($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : (!empty($host) ? $host : $config['server_name']));
	$server_url = $server_protocol . $host . $config['script_path'];
}
$smileys_path = $server_url . $config['smilies_path'] . '/';

define('BBCODE_UID_LEN', 10);
define('BBCODE_NOSMILIES_START', '<!-- no smilies start -->');
define('BBCODE_NOSMILIES_END', '<!-- no smilies end -->');
define('BBCODE_SMILIES_PATH', $smileys_path);
define('AUTOURL', time());

// Need to initialize the random numbers only ONCE
mt_srand((double) microtime() * 1000000);

class bbcode
{
	var $text = '';
	var $html = '';
	var $tag = '';

	var $code_counter = 0;
	var $code_post_id = 0;

	var $allow_html = false;
	var $allow_styling = true;
	var $allow_bbcode = true;
	var $allow_smilies = true;
	var $allow_hs = true;
	var $plain_html = false;
	var $is_sig = false;

	var $params = array();
	var $data = array();
	var $replaced_smilies = array();

	var $self_closing_tags = array('[*]', '[hr]');

	var $allowed_bbcode = array(
		'b'						=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'strong'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'em'					=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'i'						=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'u'						=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'tt'					=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'strike'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'sup'					=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'sub'					=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),

		'color'				=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'highlight'		=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'rainbow'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'gradient'		=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'fade'				=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'opacity'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),

		'align'				=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'center'			=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'font'				=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'size'				=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'hr'					=> array('nested' => true, 'inurl' => true, 'allow_empty' => true),

		'url'					=> array('nested' => false, 'inurl' => false),
		'a'						=> array('nested' => false, 'inurl' => false),
		'email'				=> array('nested' => false, 'inurl' => false),

		'list'				=> array('nested' => true, 'inurl' => false),
		'ul'					=> array('nested' => true, 'inurl' => false),
		'ol'					=> array('nested' => true, 'inurl' => false),
		'li'					=> array('nested' => true, 'inurl' => false),
		'*'						=> array('nested' => true, 'inurl' => false),

		'div'					=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'span'				=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'cell'				=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'spoiler'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'hide'				=> array('nested' => false, 'inurl' => true, 'allow_empty' => false),

		'quote'				=> array('nested' => true, 'inurl' => false),
		'ot'					=> array('nested' => true, 'inurl' => false),
		'code'				=> array('nested' => false, 'inurl' => false),
		'codeblock'		=> array('nested' => false, 'inurl' => false),
		'c'						=> array('nested' => false, 'inurl' => false),

		'img'					=> array('nested' => false, 'inurl' => true),
		'imgba'				=> array('nested' => false, 'inurl' => true),
		'albumimg'		=> array('nested' => false, 'inurl' => true),
		'attachment'	=> array('nested' => false, 'inurl' => false, 'allow_empty' => true),
		'download'		=> array('nested' => false, 'inurl' => false, 'allow_empty' => true),

		'user'				=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'search'			=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'tag'					=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'langvar'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => true),
		'language'		=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),

		'random'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => true),
		'marquee'			=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'smiley'			=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),

		'flash'				=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'swf'					=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'flv'					=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'video'				=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'ram'					=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'quick'				=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'stream'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'emff'				=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'mp3'					=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'vimeo'				=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'youtube'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'googlevideo'	=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),

		// All these tags require HTML 4 specification (NON XHTML) and only work with IE!
		// Decomment below to use these properly...
		/*
		'glow'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'shadow'		=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'blur'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'wave'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'fliph'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'flipv'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		*/

		// Requires external file for parsing TEX
		//'tex'				=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),

		// To use tables you just need to decomment this... no need to decomment even TR and TD
		//'table'			=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		/*
		'tr'				=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'td'				=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		*/

		// To use IFRAMES you just need to decomment this line (and the block some hundreds lines below)... good luck!
		//'iframe'		=> array('nested' => true, 'inurl' => false, 'allow_empty' => true),
	);

	var $allowed_html = array(
		'b'						=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'strong'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'em'					=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'i'						=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'u'						=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'tt'					=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'strike'			=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'sup'					=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),
		'sub'					=> array('nested' => true, 'inurl' => true, 'allow_empty' => false),

		'div'					=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'span'				=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'center'			=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'hr'					=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),

		'a'						=> array('nested' => false, 'inurl' => false),
		'ul'					=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'ol'					=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'li'					=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'code'				=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),
		'blockquote'	=> array('nested' => true, 'inurl' => false, 'allow_empty' => false),

		'table'			=> array('nested' => true, 'inurl' => false),
		/*
		'tr' => array('nested' => true, 'inurl' => false),
		'td' => array('nested' => true, 'inurl' => false),
		*/

		// To use IFRAMES you just need to decomment this line (and the block some hundreds lines below)... good luck!
		//'iframe' => array('nested' => true, 'inurl' => false, 'allow_empty' => true),
	);

	var $allowed_smilies = array(
		array('code' => ':wink:', 'replace' => '(wink)'),
		array('code' => ';)', 'replace' => '(smile1)'),
		array('code' => ':)', 'replace' => '(smile2)'),
	);

	/**
	* Instantiate class
	*/
	function __construct()
	{
		global $config;

		$this->allow_html = (!empty($config['allow_html']) ? true : false);
		$this->allow_bbcode = (!empty($config['allow_bbcode']) ? true : false);
		$this->allow_smilies = (!empty($config['allow_smilies']) ? true : false);
	}

	/*
	Clean bbcode/html tag.
	*/
	function clean_tag(&$item)
	{
		$tag = $item['tag'];
		//echo 'clean_tag(', $tag, ')<br />';
		$start = substr($this->text, $item['start'], $item['start_len']);
		$end = substr($this->text, $item['end'], $item['end_len']);
		$content = substr($this->text, $item['start'] + $item['start_len'], $item['end'] - $item['start'] - $item['start_len']);
		$error = array(
			'valid' => false,
			'start' => $this->process_text($start),
			'end' => $this->process_text($end)
		);
		if(isset($item['valid']) && $item['valid'] == false)
		{
			return $error;
		}

		// check if empty item is allowed
		if(!strlen($content))
		{
			$allow_empty = true;
			if($item['is_html'] && isset($this->allowed_html[$tag]['allow_empty']) && !$this->allowed_html[$tag]['allow_empty'])
			{
				$allow_empty = false;
			}
			if(!$item['is_html'] && isset($this->allowed_bbcode[$tag]['allow_empty']) && !$this->allowed_bbcode[$tag]['allow_empty'])
			{
				$allow_empty = false;
			}
			if(!$allow_empty)
			{
				return array(
					'valid' => true,
					'html' => '',
					'end' => '',
					'allow_nested' => false,
				);
			}
		}

		return array(
			'valid' => true,
			'start' => '',
			'end' => ''
		);
	}

	/*
	Process bbcode/html tag.
	This is the only function you would want to modify to add your own bbcode/html tags.
	Note: this bbcode parser doesn't make any differece of bbcode and html, so <b> and [b] are treated exactly same way
	*/
	function process_tag(&$item)
	{
		global $db, $cache, $config, $user, $lang, $topic_id, $local_urls, $meta_content;

		$server_protocol = !empty($config['cookie_secure']) ? 'https://' : 'http://';
		if (function_exists('create_server_url'))
		{
			$server_url = create_server_url();
			$local_urls = empty($local_urls) ? array($server_url) : array_merge(array($server_url), $local_urls);
		}
		else
		{
			$host = getenv('HTTP_HOST');
			$host = (!empty($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : (!empty($host) ? $host : $config['server_name']));
			$server_url = $server_protocol . $host . $config['script_path'];
		}

		//LIW - BEGIN
		$max_image_width = intval($config['liw_max_width']);
		//LIW - END
		$tag = $item['tag'];
		//echo 'process_tag(', $tag, ')<br />';
		$start = substr($this->text, $item['start'], $item['start_len']);
		$end = substr($this->text, $item['end'], $item['end_len']);
		$content = substr($this->text, $item['start'] + $item['start_len'], $item['end'] - $item['start'] - $item['start_len']);
		$error = array(
			'valid' => false,
			'start' => $this->process_text($start),
			'end' => $this->process_text($end)
		);
		if(isset($item['valid']) && $item['valid'] == false)
		{
			return $error;
		}

		// check if empty item is allowed
		if(!strlen($content))
		{
			$allow_empty = true;
			if($item['is_html'] && isset($this->allowed_html[$tag]['allow_empty']) && !$this->allowed_html[$tag]['allow_empty'])
			{
				$allow_empty = false;
			}
			if(!$item['is_html'] && isset($this->allowed_bbcode[$tag]['allow_empty']) && !$this->allowed_bbcode[$tag]['allow_empty'])
			{
				$allow_empty = false;
			}
			if(!$allow_empty)
			{
				return array(
					'valid' => true,
					'html' => '',
					'end' => '',
					'allow_nested' => false,
				);
			}
		}

		// check if nested item is allowed
		if($item['iteration'])
		{
			if($item['is_html'] && !$this->allowed_html[$tag]['nested'])
			{
				return $error;
			}
			if(!$item['is_html'] && !$this->allowed_bbcode[$tag]['nested'])
			{
				return $error;
			}
		}

		// Simple tags: B, EM, STRONG, I, U, TT, STRIKE, SUP, SUB, DIV, SPAN, CENTER
		if(($tag === 'b') || ($tag === 'em') || ($tag === 'strong') || ($tag === 'i') || ($tag === 'u') || ($tag === 'tt') || ($tag === 'strike') || ($tag === 'sup') || ($tag === 'sub') || ($tag === 'div') || ($tag === 'span') || ($tag === 'center'))
		{
			$extras = $this->allow_styling ? array('style', 'class', 'name') : array('class', 'name');
			$html = '<' . $tag . $this->add_extras($item['params'], $extras) . '>';
			return array(
				'valid' => true,
				'start' => $html,
				'end' => '</' . $tag . '>'
			);
		}

		// COLOR
		if($tag === 'color')
		{
			$extras = $this->allow_styling ? array('class') : array();
			$color = $this->valid_color((isset($item['params']['param']) ? $item['params']['param'] : (isset($item['params']['color']) ? $item['params']['color'] : false)));

			if($color === false)
			{
				return $error;
			}

			$html = '<span style="' . ($this->allow_styling && isset($item['params']['style']) ? htmlspecialchars($this->valid_style($item['params']['style'], '')) : '') . 'color: ' . $color . ';"' . $this->add_extras($item['params'], $extras) . '>';
			return array(
				'valid' => true,
				'start' => $html,
				'end' => '</span>',
			);
		}

		// RAINBOW
		if($tag === 'rainbow')
		{
			$html = $this->rainbow($content);
			return array(
				'valid' => true,
				'html' => $html,
				'allow_nested' => false,
			);
		}

		// GRADIENT
		if($tag === 'gradient')
		{
			$default_color1 = '#000080';
			$color1 = $this->valid_color((isset($item['params']['param']) ? $item['params']['param'] : (isset($item['params']['cols']) ? $item['params']['cols'] : $default_color1)), true);
			$color1 = (($color1 === false) ? $default_color1 : $color1);

			$default_color2 = '#aaccee';
			$color2 = $this->valid_color((isset($item['params']['cole']) ? $item['params']['cole'] : $default_color2), true);
			$color2 = (($color2 === false) ? $default_color2 : $color2);

			$mode = $this->process_text((isset($item['params']['mode']) ? $item['params']['mode'] : ''));

			$default_iterations = 10;
			$iterations = intval(isset($item['params']['iterations']) ? $item['params']['iterations'] : $default_iterations);
			$iterations = ((($iterations < 10) || ($iterations > 100)) ? $default_iterations : $iterations);

			$html = $this->gradient($content, $color1, $color2, $mode, $iterations);
			return array(
				'valid' => true,
				'html' => $html,
				'allow_nested' => false,
			);
		}

		// HIGHLIGHT
		if($tag === 'highlight')
		{
			$extras = $this->allow_styling ? array('class') : array();
			$default_param = '#ffffaa';
			$color = (isset($item['params']['param']) ? $item['params']['param'] : (isset($item['params']['color']) ? $item['params']['color'] : $default_param));
			$color = $this->valid_color($color);
			if($color === false)
			{
				return $error;
			}
			$html = '<span style="' . ($this->allow_styling && isset($item['params']['style']) ? htmlspecialchars($this->valid_style($item['params']['style'], '')) : '') . 'background-color: ' . $color . ';"' . $this->add_extras($item['params'], $extras) . '>';
			return array(
				'valid' => true,
				'start' => $html,
				'end' => '</span>',
			);
		}

		// SIZE
		if($tag === 'size')
		{
			$extras = $this->allow_styling ? array('class') : array();
			$default_param = 0;
			$size = intval((isset($item['params']['param']) ? $item['params']['param'] : (isset($item['params']['size']) ? $item['params']['size'] : $default_param)));
			if($size > 0 && $size < 7)
			{
				// vBulletin-style sizes
				switch($size)
				{
					case 1: $size = 7; break;
					case 2: $size = 8; break;
					case 3: $size = 10; break;
					case 4: $size = 12; break;
					case 5: $size = 15; break;
					case 6: $size = 24; break;
				}
			}
			if(($size < 6) || ($size > 48))
			{
				return $error;
			}
			$html = '<span style="' . ($this->allow_styling && isset($item['params']['style']) ? htmlspecialchars($this->valid_style($item['params']['style'], '')) : '') . 'font-size: ' . $size . 'px; line-height: 116%;"' . $this->add_extras($item['params'], $extras) . '>';
			return array(
				'valid' => true,
				'start' => $html,
				'end' => '</span>',
			);
		}

		// Single tags: HR
		if($tag === 'hr')
		{
			if($this->is_sig && !$config['allow_all_bbcode']) return $error;

			$extras = $this->allow_styling ? array('style', 'class') : array();
			$color = $this->valid_color((isset($item['params']['param']) ? $item['params']['param'] : (isset($item['params']['color']) ? $item['params']['color'] : false)));

			$html = '<' . $tag . (($color === false) ? ($this->allow_styling && isset($item['params']['style']) ? (' style="' . htmlspecialchars($this->valid_style($item['params']['style'], '')) . '"') : '') : (' style="border-color: ' . $color . ';"')) . ' />';
			return array(
				'valid' => true,
				'html' => $html
			);
		}

		// ALIGN
		if($tag === 'align')
		{
			$extras = $this->allow_styling ? array('style', 'class') : array();
			$default_param = 'left';
			$align = (isset($item['params']['param']) ? $item['params']['param'] : (isset($item['params']['align']) ? $item['params']['align'] : $default_param));
			if (($align === 'left') || ($align === 'right') || ($align === 'center') || ($align === 'justify'))
			{
				$html = '<div style="text-align: ' . $align . ';' . (($align === 'center') ? (' margin-left: auto; margin-right: auto;') : '') . '">';
				return array(
					'valid' => true,
					'start' => $html,
					'end' => '</div>',
				);
			}
			else
			{
				return $error;
			}
		}

		// IMG
		if($tag === 'img')
		{
			if($this->is_sig && !$config['allow_all_bbcode']) return $error;

			// main parameters
			$params = array(
				'src' => false,
				'alt' => false,
				'slide' => false,
			);

			// additional allowed parameters
			$extras = $this->allow_styling ? array('width', 'height', 'border', 'style', 'class', 'title', 'align') : array('width', 'height', 'border', 'title', 'align');
			if ($config['thumbnail_highslide'])
			{
				$slideshow = !empty($item['params']['slide']) ? ', { slideshowGroup: \'' . $this->process_text($item['params']['slide']) . '\' } ' : '';
			}
			$liw_bypass = false;

			// [img=blah]blah2[/img]
			if(isset($item['params']['param']))
			{
				$params['src'] = $item['params']['param'];
				$img_url = $params['src'];
				$img_url_enc = urlencode(ip_utf8_decode($params['src']));
				$path_parts = pathinfo($img_url);
				$params['alt'] = (!empty($content) ? $content : ip_clean_string($path_parts['filename'], $lang['ENCODING'], true));
			}
			// [img src=blah alt=blah width=123][/img]
			elseif(isset($item['params']['src']))
			{
				$params['src'] = $item['params']['src'];
				$img_url = $params['src'];
				$img_url_enc = urlencode(ip_utf8_decode($params['src']));
				$path_parts = pathinfo($img_url);
				$params['alt'] = (isset($item['params']['alt']) ? $item['params']['alt'] : (!empty($content) ? $content : ip_clean_string($path_parts['filename'], $lang['ENCODING'], true)));
				for($i = 0; $i < sizeof($extras); $i++)
				{
					if(!empty($item['params'][$extras[$i]]))
					{
						if($extras[$i] === 'style')
						{
							$style = $this->valid_style($item['params']['style']);
							if($style !== false)
							{
								$params['style'] = $style;
							}
						}
						else
						{
							$params[$extras[$i]] = $item['params'][$extras[$i]];
						}
					}
				}
			}
			// [img]blah[/img], [img width=blah]blah[/img]
			elseif(!empty($content))
			{
				$params['src'] = $content;
				$img_url = $params['src'];
				$img_url_enc = urlencode(ip_utf8_decode($params['src']));
				$path_parts = pathinfo($img_url);
				$params['alt'] = (isset($item['params']['alt']) ? $item['params']['alt'] : (isset($params['title']) ? $params['title'] : ip_clean_string($path_parts['filename'], $lang['ENCODING'], true)));
				// LIW - BEGIN
				if (($config['liw_enabled'] == 1) && ($max_image_width > 0) && ($config['thumbnail_posts'] == 0) && empty($this->plain_html))
				{
					$liw_bypass = true;
					if (isset($item['params']['width']))
					{
						$item['params']['width'] = ($item['params']['width'] > $max_image_width) ? $max_image_width : $item['params']['width'];
					}
					else
					{
						$image_size = @getimagesize($content);
						$item['params']['width'] = ($image_size[0] > $max_image_width) ? $max_image_width : $image_size[0];
					}
				}
				// LIW - END
				for($i = 0; $i < sizeof($extras); $i++)
				{
					if(!empty($item['params'][$extras[$i]]))
					{
						if($extras[$i] === 'style')
						{
							$style = $this->valid_style($item['params']['style']);
							if($style !== false)
							{
								$params['style'] = $style;
							}
						}
						else
						{
							$params[$extras[$i]] = $item['params'][$extras[$i]];
						}
					}
				}
			}

			$is_smiley = false;
			if (substr($params['src'], 0, strlen(BBCODE_SMILIES_PATH)) == BBCODE_SMILIES_PATH)
			{
				$is_smiley = true;
			}

			if (!$is_smiley && $config['thumbnail_posts'] && ($liw_bypass == false) && empty($this->plain_html))
			{
				$process_thumb = !empty($config['thumbnail_cache']) ? true : false;
				$thumb_exists = false;
				$thumb_processed = false;
				$is_light_view = false;
				if (isset($item['params']['thumb']))
				{
					if ($item['params']['thumb'] == 'false')
					{
						$process_thumb = false;
					}
				}
				if(!empty($process_thumb))
				{
					$thumb_processed = true;
					$pic_id = $img_url;
					$pic_fullpath = str_replace(array(' '), array('%20'), $pic_id);
					$pic_id = str_replace('http://', '', str_replace('https://', '', $pic_id));
					$pic_path[] = array();
					$pic_path = explode('/', $pic_id);
					$pic_filename = end($pic_path);
					$file_part = explode('.', strtolower($pic_filename));
					$pic_filetype = end($file_part);
					$thumb_ext_array = array('gif', 'jpg', 'png');
					if (in_array($pic_filetype, $thumb_ext_array))
					{
						$user_dir = '';
						$users_images_path = str_replace('http://', '', str_replace('https://', '', $server_url . str_replace(IP_ROOT_PATH, '', POSTED_IMAGES_PATH)));
						$pic_title = substr($pic_filename, 0, strlen($pic_filename) - strlen($pic_filetype) - 1);
						$pic_title_reg = preg_replace('/[^A-Za-z0-9]+/', '_', $pic_title);
						$pic_thumbnail = 'mid_' . md5($pic_id) . '_' . $pic_filename;
						if (strpos($pic_id, $users_images_path) !== false)
						{
							$user_dir = str_replace($pic_filename, '', str_replace($users_images_path, '', $pic_id));
							$pic_thumbnail = $pic_filename;
						}
						$pic_thumbnail_fullpath = POSTED_IMAGES_THUMBS_PATH . $user_dir . $pic_thumbnail;
						// Light View - BEGIN
						$light_view = request_var('light_view', 0);
						// Force to false for debugging purpose...
						$light_view = 0;
						if (!empty($light_view) && !empty($user_dir))
						{
							$is_light_view = true;
							$pic_thumbnail_fullpath = POSTED_IMAGES_THUMBS_S_PATH . $user_dir . $pic_thumbnail;
						}
						// Light View - END
						if(file_exists($pic_thumbnail_fullpath))
						{
							$thumb_exists = true;
							$params['src'] = $server_url . str_replace(IP_ROOT_PATH, '', $pic_thumbnail_fullpath);
						}
					}
				}
				$cache_image = true;
				$cache_append = '';
				if (isset($item['params']['cache']))
				{
					if ($item['params']['cache'] == 'false')
					{
						//$bbc_eamp = '&amp;';
						$bbc_eamp = '&';
						$cache_image = false;
						$cache_append = 'cache=false' . $bbc_eamp . 'rand=' . md5(rand()) . $bbc_eamp;
					}
					else
					{
						$cache_image = true;
					}
				}
				if (!empty($process_thumb) && (($thumb_exists == false) || ($cache_image == false)))
				{
					$pic_thumbnail_script = $server_url . CMS_PAGE_IMAGE_THUMBNAIL . '?' . $cache_append . 'pic_id=' . $img_url_enc;
					// Light View - BEGIN
					if (!empty($thumb_processed) && !empty($is_light_view))
					{
						$img_url_enc = $user_dir . $pic_thumbnail;
						$pic_thumbnail_script = $server_url . CMS_PAGE_IMAGE_THUMBNAIL_S . '?' . $cache_append . 'pic_id=' . $img_url_enc;
					}
					// Light View - END
					$params['src'] = $pic_thumbnail_script;
				}
			}

			// generate html
			$html = '<img';
			foreach($params as $var => $value)
			{
				if ($this->process_text($value) != '')
				{
					$html .= ' ' . $var . '="' . $this->process_text($value) . '"';
				}
				if (($var == 'src') && (!$this->is_sig))
				{
					$meta_content['og_img'][] = $value;
				}
			}
			if(!isset($params['title']))
			{
				$html .= ' title="' . $this->process_text($params['alt']) . '"';
			}
			$html .= ' />';
			// add url
			/*
			if (strpos($params['src'], trim($config['server_name'])) == false)
			{
				$html = $this->process_text($params['alt']);
			}
			*/
			// Light View - BEGIN
			if (!empty($thumb_processed) && !empty($is_light_view) && empty($this->plain_html))
			{
				$item['inurl'] = true;
			}
			// Light View - END
			if(empty($item['inurl']) && !$is_smiley && empty($this->plain_html))
			{
				if ($this->allow_hs && $config['thumbnail_posts'] && $config['thumbnail_highslide'])
				{
					$extra_html = ' class="highslide" onclick="return hs.expand(this' . $slideshow . ')"';
				}
				else
				{
					$extra_html = ' target="_blank" title="' . $lang['OpenNewWindow'] . '"';
				}
				$html = '<a href="' . $this->process_text($img_url) . '"' . $extra_html . '>' . $html . '</a>';
			}
			return array(
				'valid' => true,
				'html' => $html,
				'allow_nested' => false,
			);
		}

		// IMGBA
		if($tag === 'imgba')
		{
			if($this->is_sig) return $error;
			if (!empty($this->plain_html)) return $error;

			// main parameters
			$params = array(
				'before' => false,
				'after' => false,
				'width' => false,
				'w' => false,
				'height' => false,
				'h' => false,
				'alt' => false,
				'title' => false,
			);

			foreach ($params as $k => $v)
			{
				$params[$k] = $item['params'][$k];
			}

			if (empty($params['before']) || empty($params['after']))
			{
				return $error;
			}

			$path_parts = pathinfo($params['before']);
			(int) $params['width'] = !empty($params['w']) ? intval($params['w']) : intval($params['width']);
			(int) $params['height'] = !empty($params['h']) ? intval($params['h']) : intval($params['height']);
			$params['alt'] = (!empty($params['alt']) ? $params['alt'] : ip_clean_string($path_parts['filename'], $lang['ENCODING'], true));

			if (empty($params['width']) || empty($params['height']))
			{
				return $error;
			}

			// Since we passed the main tests, we may force all needed JS inclusions...
			$config['jquery_ui'] = true;
			$config['jquery_ui_ba'] = true;

			$max_width = 600;
			$or_width = $params['width'];
			$or_height = $params['height'];
			if ($params['width'] > $max_width)
			{
				$params['width'] = $max_width;
				$params['height'] = $max_width / ($or_width / $or_height);
			}

			// additional allowed parameters
			$extras = $this->allow_styling ? array('style', 'class') : array();

			for($i = 0; $i < sizeof($extras); $i++)
			{
				if(!empty($item['params'][$extras[$i]]))
				{
					if($extras[$i] === 'style')
					{
						$style = $this->valid_style($item['params']['style']);
						if($style !== false)
						{
							$params['style'] = $style;
						}
					}
					else
					{
						$params[$extras[$i]] = $item['params'][$extras[$i]];
					}
				}
			}

			$container = 'imgba_' . substr(md5($params['before']), 0, 6);

			$imgba_error = false;
			$allowed_ext = array('gif', 'jpeg', 'jpg', 'png');
			$img_test_array = array('before', 'after');
			// Few "pseudo-security" tests
			foreach ($img_test_array as $img_test)
			{
				$file_ext = substr(strrchr($params[$img_test], '.'), 1);
				//if (!in_array($file_ext, $allowed_ext) || (strpos($params[$img_test], $server_url) !== 0) || (strpos($params[$img_test], '?') !== 0))
				if (!in_array($file_ext, $allowed_ext))
				{
					$imgba_error = true;
				}
			}

			if (!empty($imgba_error))
			{
				return $error;
			}

			// generate html
			$html = '';
			$html .= '<div id="' . $container . '"';
			foreach($params as $var => $value)
			{
				if (in_array($value, array('width', 'height')) && ($this->process_text($value) != ''))
				{
					$html .= ' ' . $var . '="' . $this->process_text($value) . '"';
				}
			}
			$html .= '>';

			$img_alt = $this->process_text($params['alt']);
			$img_title = (!empty($params['title']) ? ' title="' . $this->process_text($params['title']) . '"' : '');
			$html .= '<div><img src="' . $params['before'] . '" width="' . $params['width'] . '" height="' . $params['height'] . '" alt="Before: ' . $img_alt . '"' . $img_title . ' /></div>';
			$html .= '<div><img src="' . $params['after'] . '" width="' . $params['width'] . '" height="' . $params['height'] . '" alt="After: ' . $img_alt . '"' . $img_title . ' /></div>';
			$html .= '</div>';
			$html .= '<script type="text/javascript">$(function(){ $(\'#' . $container . '\').beforeAfter({imagePath: \'' . $server_url . 'templates/common/jquery/\', showFullLinks: true, cursor: \'e-resize\', dividerColor: \'#dd2222\', beforeLinkText: \'' . $lang['IMG_BA_SHOW_ONLY_BEFORE'] . '\', afterLinkText: \'' . $lang['IMG_BA_SHOW_ONLY_AFTER'] . '\'}); });</script>';
			return array(
				'valid' => true,
				'html' => $html,
				'allow_nested' => false,
			);
		}

		// ALBUMIMG
		if($tag === 'albumimg')
		{
			if($this->is_sig && !$config['allow_all_bbcode']) return $error;
			if (!empty($this->plain_html)) return $error;

			// main parameters
			$params = array(
				'src' => false,
				'alt' => false,
			);
			// additional allowed parameters
			$extras = $this->allow_styling ? array('width', 'height', 'border', 'style', 'class', 'title', 'align') : array('width', 'height', 'border', 'title', 'align');
			// [albumimg=blah]blah2[/albumimg]
			if(isset($item['params']['param']))
			{
				$params['src'] = $item['params']['param'];
				$pic_url = $item['params']['param'];
				$params['alt'] = $content;
			}
			// [albumimg src=blah alt=blah width=123][/albumimg]
			elseif(isset($item['params']['src']))
			{
				$params['src'] = $item['params']['src'];
				$pic_url = $item['params']['src'];
				$params['alt'] = isset($item['params']['alt']) ? $item['params']['alt'] : $content;
				for($i = 0; $i < sizeof($extras); $i++)
				{
					if(!empty($item['params'][$extras[$i]]))
					{
						if($extras[$i] === 'style')
						{
							$style = $this->valid_style($item['params']['style']);
							if($style !== false)
							{
								$params['style'] = $style;
							}
						}
						else
						{
							$params[$extras[$i]] = $item['params'][$extras[$i]];
						}
					}
				}
			}
			// [albumimg]blah[/albumimg], [albumimg width=blah]blah[/albumimg]
			elseif(!empty($content))
			{
				$params['src'] = $content;
				$pic_url = $content;
				$params['alt'] = isset($item['params']['alt']) ? $item['params']['alt'] : (isset($params['title']) ? $params['title'] : '');
				for($i = 0; $i < sizeof($extras); $i++)
				{
					if(!empty($item['params'][$extras[$i]]))
					{
						if($extras[$i] === 'style')
						{
							$style = $this->valid_style($item['params']['style']);
							if($style !== false)
							{
								$params['style'] = $style;
							}
						}
						else
						{
							$params[$extras[$i]] = $item['params'][$extras[$i]];
						}
					}
				}
			}
			// generate html
			$pic_url = $server_url . 'album_showpage.' . PHP_EXT . '?pic_id=' . $pic_url;
			if(isset($item['params']['mode']))
			{
				$pic_mode = $item['params']['mode'];
				if ($pic_mode === 'full')
				{
					$params['src'] = $server_url . 'album_picm.' . PHP_EXT . '?pic_id=' . $params['src'];
				}
				else
				{
					$params['src'] = $server_url . 'album_thumbnail.' . PHP_EXT . '?pic_id=' . $params['src'];
				}
			}
			else
			{
				$params['src'] = $server_url . 'album_thumbnail.' . PHP_EXT . '?pic_id=' . $params['src'];
			}
			$html = '<img';
			foreach($params as $var => $value)
			{
				$html .= ' ' . $var . '="' . $this->process_text($value) . '"';
				if (($var == 'src') && (!$this->is_sig))
				{
					$meta_content['og_img'][] = $value;
				}
			}
			if(!isset($params['title']))
			{
				$html .= ' title="' . $this->process_text($params['alt']) . '"';
			}
			$html .= ' />';
			// add url
			if(empty($item['inurl']))
			{
				$html = '<a href="' . $this->process_text($pic_url) . '" title="' . $lang['Click_enlarge_pic'] . '">' . $html . '</a>';
			}
			return array(
				'valid' => true,
				'html' => $html,
				'allow_nested' => false,
			);
		}

		// ATTACHMENT
		if(($tag === 'attachment') || ($tag === 'download'))
		{
			if($this->is_sig && !$config['allow_all_bbcode']) return $error;
			if (!empty($this->plain_html)) return $error;

			$html = '';
			$params['id'] = isset($item['params']['param']) ? intval($item['params']['param']) : (isset($item['params']['id']) ? intval($item['params']['id']) : false);
			$params['title'] = isset($item['params']['title']) ? $this->process_text($item['params']['title']) : false;
			$params['description'] = isset($item['params']['description']) ? $this->process_text($item['params']['description']) : (!empty($content) ? $this->process_text($content) : false);
			$params['icon'] = isset($item['params']['icon']) ? $this->process_text($item['params']['icon']) : false;
			$color = $this->valid_color(isset($item['params']['color']) ? $item['params']['color'] : false);
			$bgcolor = $this->valid_color(isset($item['params']['bgcolor']) ? $item['params']['bgcolor'] : false);

			$errored = false;
			if ($params['id'] <= 0)
			{
				$errored = true;
			}

			if (!$errored)
			{
				if ($tag === 'attachment')
				{
					if (!function_exists('get_attachment_details'))
					{
						include_once(IP_ROOT_PATH . 'includes/functions_bbcode.' . PHP_EXT);
					}
					$is_auth_ary = auth(AUTH_READ, AUTH_LIST_ALL, $user->data);
					$is_download_auth_ary = auth(AUTH_DOWNLOAD, AUTH_LIST_ALL, $user->data);
					$attachment_details = get_attachment_details($params['id']);
					if (($attachment_details == false) || !$is_auth_ary[$attachment_details['forum_id']]['auth_read'] || !$is_download_auth_ary[$attachment_details['forum_id']]['auth_download'])
					{
						$errored = true;
					}
				}
				else
				{
					if (!function_exists('get_download_details'))
					{
						include_once(IP_ROOT_PATH . 'includes/functions_bbcode.' . PHP_EXT);
					}
					$attachment_details = get_download_details($params['id']);
					$errored = ($attachment_details == false) ? true : false;
				}
			}

			if (!$errored)
			{
				if ($tag === 'attachment')
				{
					$params['title'] = $params['title'] ? $params['title'] : (!empty($attachment_details['real_filename']) ? $attachment_details['real_filename'] : '&nbsp;');
					$params['description'] = $params['description'] ? $params['description'] : (!empty($attachment_details['comment']) ? $attachment_details['comment'] : ' ');
					$params['icon'] = IP_ROOT_PATH . FILES_ICONS_DIR . ($params['icon'] ? $params['icon'] : 'default.png');
					$download_url = IP_ROOT_PATH . 'download.' . PHP_EXT . '?id=' . $params['id'];
				}
				else
				{
					$params['title'] = $params['title'] ? $params['title'] : (!empty($attachment_details['file_name']) ? $attachment_details['file_name'] : '&nbsp;');
					$params['description'] = $params['description'] ? $params['description'] : (!empty($attachment_details['file_desc']) ? $attachment_details['file_desc'] : ' ');
					$params['icon'] = IP_ROOT_PATH . FILES_ICONS_DIR . ($params['icon'] ? $params['icon'] : (!empty($attachment_details['file_posticon']) ? $attachment_details['file_posticon'] : 'default.png'));
					$attachment_details['filesize'] = $attachment_details['file_size'];
					$attachment_details['download_count'] = $attachment_details['file_dls'];
					$download_url = IP_ROOT_PATH . 'dload.' . PHP_EXT . '?action=file&amp;file_id=' . $params['id'];
				}

				$params['title'] = htmlspecialchars($params['title']);
				$params['description'] = htmlspecialchars($params['description']);
				$params['icon'] = file_exists($params['icon']) ? $params['icon'] : (IP_ROOT_PATH . FILES_ICONS_DIR . 'default.png');
				$style = ($color || $bgcolor) ? (' style="' . ($color ? 'color: ' . $color . ';' : '') . ($bgcolor ? 'background-color: ' . $bgcolor . ';' : '') . '"') : '';

				$html .= '<div class="mg_attachtitle"' . $style . '>' . $params['title'] . '</div>';
				$html .= '<div class="mg_attachdiv"><table>';
				$html .= '<tr><td style="width: 15%;"><b class="gensmall">' . $lang['Description'] . ':</b></td><td style="width: 75%;"><span class="gensmall">' . $params['description'] . '</span></td><td rowspan="3" class="row-center" style="width: 10%;"><img src="' . $params['icon'] . '" alt="' . $params['description'] . '" /><br /><a href="' . append_sid($download_url) . '" title="' . $lang['Download'] . ' ' . $params['title'] . '"><b>' . $lang['Download'] . '</b></a></td></tr>';
				$html .= '<tr><td><b class="gensmall">' . $lang['FILESIZE'] . ':</b></td><td><span class="gensmall">' . round(($attachment_details['filesize'] / 1024), 2) . ' KB</span></td></tr>';
				$html .= '<tr><td><b class="gensmall">' . $lang['DOWNLOADED'] . ':</b></td><td><span class="gensmall">' . $attachment_details['download_count'] . '</span></td></tr>';
				$html .= '</table></div>';
			}
			else
			{
				$style = ($color || $bgcolor) ? (' style="' . ($color ? 'color: ' . $color . ';' : '') . ($bgcolor ? 'background-color: ' . $bgcolor . ';' : '') . '"') : '';
				$html .= '<div class="mg_attachtitle"' . $style . '>' . $lang['Not_Authorized'] . '</div>';
				$html .= '<div class="mg_attachdiv"><div style="text-align: center;">' . $lang['FILE_NOT_AUTH'] . '</div></div>';
			}

			return array(
				'valid' => true,
				'html' => $html,
				'allow_nested' => false,
			);
		}

		// LIST
		if(($tag === 'list') || ($tag === 'ul') || ($tag === 'ol'))
		{
			if($this->is_sig && !$config['allow_all_bbcode']) return $error;
			$extras = $this->allow_styling ? array('style', 'class') : array();
			// check if nested tags are all [*]
			$nested_count = 0;
			for($i = 0; $i < sizeof($item['items']); $i++)
			{
				$tag2 = $item['items'][$i]['tag'];
				if(($tag2 === '*') || ($tag2 === 'li'))
				{
					$nested_count++;
				}
			}
			if(!$nested_count)
			{
				// no <li> items. return error
				return $error;
			}
			// replace "list" with html tag
			if($tag === 'list')
			{
				if(isset($item['params']['param']) || isset($item['params']['type']))
				{
					$tag = 'ol';
				}
				else
				{
					$tag = 'ul';
				}
			}
			// valid tag. process subitems to make sure there are no extra items and remove all code between elements
			$last_item = false;
			for($i = 0; $i < sizeof($item['items']); $i++)
			{
				$item2 = &$item['items'][$i];
				$tag2 = $item2['tag'];
				if(($tag2 === '*') || ($tag2 === 'li'))
				{
					// mark as valid
					$item2['list_valid'] = true;
					if($last_item === false)
					{
						// change start position to end of [list]
						$pos = !empty($pos) ? $pos : 0;
						$pos2 = $item2['start'] + $item2['start_len'];
						$item2['start'] = $pos;
						$item2['start_len'] = $pos2 - $pos;
						$item2['first_entry'] = true;
					}
					$last_item = &$item['items'][$i];
				}
			}
			// generate html
			$html = '<' . $tag;
			if(isset($item['params']['param']))
			{
				$html .= ' type="' . htmlspecialchars($item['params']['param']) . '"';
			}
			elseif(isset($item['params']['type']))
			{
				$html .= ' type="' . htmlspecialchars($item['params']['type']) . '"';
			}
			$html .= $this->add_extras($item['params'], $extras) . '>';
			return array(
				'valid' => true,
				'start' => $html,
				'end' => '</li></' . $tag . '>'
			);
		}

		// [*], LI
		if(($tag === '*') || ($tag === 'li'))
		{
			if($this->is_sig && !$config['allow_all_bbcode']) return $error;
			$extras = $this->allow_styling ? array('style', 'class') : array();
			// if not marked as valid return error
			if(empty($item['list_valid']))
			{
				return $error;
			}
			$html = '<li';
			if(empty($item['first_entry']))
			{
				// add closing tag for previous list entry
				$html = '</li>' . $html;
			}
			$html .= $this->add_extras($item['params'], $extras) . '>';
			return array(
				'valid' => true,
				'start' => $html,
				'end' => '',
			);
		}

		// FONT
		if($tag === 'font')
		{
			$fonts = array(
				'Arial',
				'Arial Black',
				'Comic Sans MS',
				'Courier New',
				'Impact',
				'Lucida Console',
				'Lucida Sans Unicode',
				'Microsoft Sans Serif',
				'Symbol',
				'Tahoma',
				'Times New Roman',
				'Traditional Arabic',
				'Trebuchet MS',
				'Verdana',
				'Webdings',
				'Wingdings'
			);
			if (defined('FONTS_DIR'))
			{
				foreach ($cache->obtain_fonts() as $font_file)
				{
					$fonts[] = substr($font_file, 0, -4);
				}
			}
			$extras = $this->allow_styling ? array('style', 'class') : array();
			$default_param = 'Verdana';
			$font = (isset($item['params']['param']) ? $item['params']['param'] : (isset($item['params']['font']) ? $item['params']['font'] : $default_param));
			$font = in_array($font, $fonts) ? $font : $default_param;
			$html = '<span style="font-family: \'' . $font . '\';">';
			return array(
				'valid' => true,
				'start' => $html,
				'end' => '</span>',
			);
		}

		// CELL
		if($tag === 'cell')
		{
			$extras = $this->allow_styling ? array('style', 'class', 'align', 'border') : array('class', 'align');

			$width = (isset($item['params']['width']) ? (' width: ' . intval($item['params']['width']) . 'px;') : '');
			$height = (isset($item['params']['height']) ? (' height: ' . intval($item['params']['height']) . 'px;') : '');
			$padding = (isset($item['params']['padding']) ? (' padding: ' . intval($item['params']['padding']) . 'px;') : '');
			$margin = (isset($item['params']['margin']) ? (' margin: ' . intval($item['params']['margin']) . 'px;') : '');
			$borderwidth = (isset($item['params']['borderwidth']) ? (' border-width: ' . intval($item['params']['borderwidth']) . 'px;') : '');

			$bgcolor = $this->valid_color((isset($item['params']['bgcolor']) ? $item['params']['bgcolor'] : false));
			$bgcolor = (($bgcolor !== false) ? (' background-color: ' . $bgcolor . ';') : '');

			$bordercolor = $this->valid_color((isset($item['params']['bordercolor']) ? $item['params']['bordercolor'] : false));
			$bordercolor = (($bordercolor !== false) ? (' border-color: ' . $bordercolor . ';') : '');

			$color = $this->valid_color((isset($item['params']['color']) ? $item['params']['color'] : false));
			$color = (($color !== false) ? (' color: ' . $color . ';') : '');

			$html = '<div style="' . ($this->allow_styling && isset($item['params']['style']) ? htmlspecialchars($this->valid_style($item['params']['style'], '')) : '') . $height . $width . $bgcolor . $bordercolor . $borderwidth . $color . $padding . $margin . '"' . $this->add_extras($item['params'], $extras) . '>';
			return array(
				'valid' => true,
				'start' => $html,
				'end' => '</div>',
			);
		}

		// URL, A
		if(($tag === 'url') || ($tag === 'a'))
		{
			$extras = $this->allow_styling ? array('style', 'class', 'name', 'title') : array('name', 'title');
			$allow_nested = true;
			$strip_text = false;
			$show_content = true;
			$url = '';
			// get url
			if(!empty($item['params']['param']))
			{
				$url = $item['params']['param'];
			}
			elseif(!empty($item['params']['href']))
			{
				$url = $item['params']['href'];
			}
			elseif(!$item['is_html'])
			{
				$url = $content;
				$allow_nested = false;
				$strip_text = true;
			}
			else
			{
				return $error;
			}
			if(($url === $content) && (strlen($content) > 64))
			{
				$content = htmlspecialchars(substr($content, 0, 35) . '...' . substr($content, strlen($content) - 15));
				$show_content = false;
			}
			// check if its email
			if(substr(strtolower($url), 0, 7) === 'mailto:')
			{
				$item['tag'] = 'email';
				return $this->process_tag($item);
			}
			// check for invalid urls
			$url = $this->valid_url($url, '');
			if(empty($url))
			{
				return $error;
			}
			// check nested items
			if(!$allow_nested)
			{
				for($i = 0; $i < sizeof($item['items']); $i+…