/forum/Sources/Subs.php

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<?php
/**********************************************************************************
* Subs.php                                                                        *
***********************************************************************************
* SMF: Simple Machines Forum                                                      *
* Open-Source Project Inspired by Zef Hemel (zef@zefhemel.com)                    *
* =============================================================================== *
* Software Version:           SMF 2.0 RC2                                         *
* Software by:                Simple Machines (http://www.simplemachines.org)     *
* Copyright 2006-2009 by:     Simple Machines LLC (http://www.simplemachines.org) *
*           2001-2006 by:     Lewis Media (http://www.lewismedia.com)             *
* Support, News, Updates at:  http://www.simplemachines.org                       *
***********************************************************************************
* This program is free software; you may redistribute it and/or modify it under   *
* the terms of the provided license as published by Simple Machines LLC.          *
*                                                                                 *
* This program is distributed in the hope that it is and will be useful, but      *
* WITHOUT ANY WARRANTIES; without even any implied warranty of MERCHANTABILITY    *
* or FITNESS FOR A PARTICULAR PURPOSE.                                            *
*                                                                                 *
* See the "license.txt" file for details of the Simple Machines license.          *
* The latest version can always be found at http://www.simplemachines.org.        *
**********************************************************************************/

if (!defined('SMF'))
	die('Hacking attempt...');

/*	This file has all the main functions in it that relate to, well,
	everything.  It provides all of the following functions:

	void updateStats(string statistic, string condition = '1')
		- statistic can be 'member', 'message', 'topic', or 'postgroups'.
		- parameter1 and parameter2 are optional, and are used to update only
		  those stats that need updating.
		- the 'member' statistic updates the latest member, the total member
		  count, and the number of unapproved members.
		- 'member' also only counts approved members when approval is on, but
		  is much more efficient with it off.
		- updating 'message' changes the total number of messages, and the
		  highest message id by id_msg - which can be parameters 1 and 2,
		  respectively.
		- 'topic' updates the total number of topics, or if parameter1 is true
		  simply increments them.
		- the 'postgroups' case updates those members who match condition's
		  post-based membergroups in the database (restricted by parameter1).

	void updateMemberData(int id_member, array data)
		- updates the columns in the members table.
		- id_member is either an int or an array of ints to be updated.
		- data is an associative array of the columns to be updated and their
		  respective values.
		- any string values updated should be quoted and slashed.
		- the value of any column can be '+' or '-', which mean 'increment'
		  and decrement, respectively.
		- if the member's post number is updated, updates their post groups.
		- this function should be used whenever member data needs to be
		  updated in place of an UPDATE query.

	void updateSettings(array changeArray, use_update = false)
		- updates both the settings table and $modSettings array.
		- all of changeArray's indexes and values are assumed to have escaped
		  apostrophes (')!
		- if a variable is already set to what you want to change it to, that
		  variable will be skipped over; it would be unnecessary to reset.
		- if use_update is true, UPDATEs will be used instead of REPLACE.
		- when use_update is true, the value can be true or false to increment
		  or decrement it, respectively.

	string constructPageIndex(string base_url, int &start, int max_value,
			int num_per_page, bool compact_start = false)
		- builds the page list, e.g. 1 ... 6 7 [8] 9 10 ... 15.
		- compact_start caused it to use "url.page" instead of
		  "url;start=page".
		- handles any wireless settings (adding special things to URLs.)
		- very importantly, cleans up the start value passed, and forces it to
		  be a multiple of num_per_page.
		- also checks that start is not more than max_value.
		- base_url should be the URL without any start parameter on it.
		- uses the compactTopicPagesEnable and compactTopicPagesContiguous
		  settings to decide how to display the menu.
		- an example is available near the function definition.

	string comma_format(float number)
		- formats a number to display in the style of the admins' choosing.
		- uses the format of number_format to decide how to format the number.
		- for example, it might display "1 234,50".
		- caches the formatting data from the setting for optimization.

	string timeformat(int time, bool show_today = true, string offset_type = false)
		- returns a pretty formated version of time based on the user's format
		  in $user_info['time_format'].
		- applies all necessary time offsets to the timestamp, unless offset_type
		  is set.
		- if todayMod is set and show_today was not not specified or true, an
		  alternate format string is used to show the date with something to
		  show it is "today" or "yesterday".
		- performs localization (more than just strftime would do alone.)

	string un_htmlspecialchars(string text)
		- removes the base entities (&lt;, &quot;, etc.) from text.
		- should be used instead of html_entity_decode for PHP version
		  compatibility reasons.
		- additionally converts &nbsp; and &#039;.
		- returns the string without entities.

	string shorten_subject(string regular_subject, int length)
		- shortens a subject so that it is either shorter than length, or that
		  length plus an ellipsis.
		- respects internationalization characters and entities as one character.
		- avoids trailing entities.
		- returns the shortened string.

	int forum_time(bool use_user_offset = true)
		- returns the current time with offsets.
		- always applies the offset in the time_offset setting.
		- if use_user_offset is true, applies the user's offset as well.
		- returns seconds since the unix epoch.

	array permute(array input)
		- calculates all the possible permutations (orders) of array.
		- should not be called on huge arrays (bigger than like 10 elements.)
		- returns an array containing each permutation.


	string parse_bbc(string message, bool smileys = true, string cache_id = '', array parse_tags = null)
		- this very hefty function parses bbc in message.
		- only parses bbc tags which are not disabled in disabledBBC.
		- also handles basic HTML, if enablePostHTML is on.
		- caches the from/to replace regular expressions so as not to reload
		  them every time a string is parsed.
		- only parses smileys if smileys is true.
		- does nothing if the enableBBC setting is off.
		- applies the fixLongWords magic if the setting is set to on.
		- uses the cache_id as a unique identifier to facilitate any caching
		  it may do.
		- returns the modified message.

	void parsesmileys(string &message)
		- the smiley parsing function which makes pretty faces appear :).
		- if custom smiley sets are turned off by smiley_enable, the default
		  set of smileys will be used.
		- these are specifically not parsed in code tags [url=mailto:Dad@blah.com]
		- caches the smileys from the database or array in memory.
		- doesn't return anything, but rather modifies message directly.

	string highlight_php_code(string code)
		- Uses PHP's highlight_string() to highlight PHP syntax
		- does special handling to keep the tabs in the code available.
		- used to parse PHP code from inside [code] and [php] tags.
		- returns the code with highlighted HTML.

	void writeLog(bool force = false)
		// !!!

	void redirectexit(string setLocation = '', bool use_refresh = false)
		// !!!

	void obExit(bool do_header = true, bool do_footer = do_header)
		// !!!

	int logAction($action, $extra = array())
		// !!!

	void trackStats($stats = array())
		- caches statistics changes, and flushes them if you pass nothing.
		- if '+' is used as a value, it will be incremented.
		- does not actually commit the changes until the end of the page view.
		- depends on the trackStats setting.

	void spamProtection(string error_type)
		- attempts to protect from spammed messages and the like.
		- takes a $txt index. (not an actual string.)
		- time taken depends on error_type - generally uses the modSetting.

	array url_image_size(string url)
		- uses getimagesize() to determine the size of a file.
		- attempts to connect to the server first so it won't time out.
		- returns false on failure, otherwise the output of getimagesize().

	void determineTopicClass(array &topic_context)
		// !!!

	void setupThemeContext(bool force_reload = false)
		// !!!

	void template_rawdata()
		// !!!

	void template_header()
		// !!!

	void theme_copyright(bool get_it = false)
		// !!!

	void template_footer()
		// !!!

	void db_debug_junk()
		// !!!

	void getAttachmentFilename(string filename, int id_attach, bool new = true)
		// !!!

	string host_from_ip(string ip_address)
		// !!!

	string create_button(string filename, string alt, string label, bool custom = '')
		// !!!

	void clean_cache(type = '')
		// !!!
*/

// Update some basic statistics...
function updateStats($type, $parameter1 = null, $parameter2 = null)
{
	global $sourcedir, $modSettings, $smcFunc;

	switch ($type)
	{
	case 'member':
		$changes = array(
			'memberlist_updated' => time(),
		);

		// #1 latest member ID, #2 the real name for a new registration.
		if (is_numeric($parameter1))
		{
			$changes['latestMember'] = $parameter1;
			$changes['latestRealName'] = $parameter2;

			updateSettings(array('totalMembers' => true), true);
		}

		// We need to calculate the totals.
		else
		{
			// Update the latest activated member (highest id_member) and count.
			$result = $smcFunc['db_query']('', '
				SELECT COUNT(*), MAX(id_member)
				FROM {db_prefix}members
				WHERE is_activated = {int:is_activated}',
				array(
					'is_activated' => 1,
				)
			);
			list ($changes['totalMembers'], $changes['latestMember']) = $smcFunc['db_fetch_row']($result);
			$smcFunc['db_free_result']($result);

			// Get the latest activated member's display name.
			$result = $smcFunc['db_query']('', '
				SELECT real_name
				FROM {db_prefix}members
				WHERE id_member = {int:id_member}
				LIMIT 1',
				array(
					'id_member' => (int) $changes['latestMember'],
				)
			);
			list ($changes['latestRealName']) = $smcFunc['db_fetch_row']($result);
			$smcFunc['db_free_result']($result);

			// Are we using registration approval?
			if (!empty($modSettings['registration_method']) && $modSettings['registration_method'] == 2)
			{
				// Update the amount of members awaiting approval - ignoring COPPA accounts, as you can't approve them until you get permission.
				$result = $smcFunc['db_query']('', '
					SELECT COUNT(*)
					FROM {db_prefix}members
					WHERE is_activated IN ({array_int:activation_status})',
					array(
						'activation_status' => array(3, 4),
					)
				);
				list ($changes['unapprovedMembers']) = $smcFunc['db_fetch_row']($result);
				$smcFunc['db_free_result']($result);
			}
		}

		updateSettings($changes);
		break;

	case 'message':
		if ($parameter1 === true && $parameter2 !== null)
			updateSettings(array('totalMessages' => true, 'maxMsgID' => $parameter2), true);
		else
		{
			// SUM and MAX on a smaller table is better for InnoDB tables.
			$result = $smcFunc['db_query']('', '
				SELECT SUM(num_posts + unapproved_posts) AS total_messages, MAX(id_last_msg) AS max_msg_id
				FROM {db_prefix}boards
				WHERE redirect = {string:blank_redirect}' . (!empty($modSettings['recycle_enable']) && $modSettings['recycle_board'] > 0 ? '
					AND id_board != {int:recycle_board}' : ''),
				array(
					'recycle_board' => isset($modSettings['recycle_board']) ? $modSettings['recycle_board'] : 0,
					'blank_redirect' => '',
				)
			);
			$row = $smcFunc['db_fetch_assoc']($result);
			$smcFunc['db_free_result']($result);

			updateSettings(array(
				'totalMessages' => $row['total_messages'] === null ? 0 : $row['total_messages'],
				'maxMsgID' => $row['max_msg_id'] === null ? 0 : $row['max_msg_id']
			));
		}
		break;

	case 'subject':
		// Remove the previous subject (if any).
		$smcFunc['db_query']('', '
			DELETE FROM {db_prefix}log_search_subjects
			WHERE id_topic = {int:id_topic}',
			array(
				'id_topic' => (int) $parameter1,
			)
		);

		// Insert the new subject.
		if ($parameter2 !== null)
		{
			$parameter1 = (int) $parameter1;
			$parameter2 = text2words($parameter2);

			$inserts = array();
			foreach ($parameter2 as $word)
				$inserts[] = array($word, $parameter1);

			if (!empty($inserts))
				$smcFunc['db_insert']('ignore',
					'{db_prefix}log_search_subjects',
					array('word' => 'string', 'id_topic' => 'int'),
					$inserts,
					array('word', 'id_topic')
				);
		}
		break;

	case 'topic':
		if ($parameter1 === true)
			updateSettings(array('totalTopics' => true), true);
		else
		{
			// Get the number of topics - a SUM is better for InnoDB tables.
			// We also ignore the recycle bin here because there will probably be a bunch of one-post topics there.
			$result = $smcFunc['db_query']('', '
				SELECT SUM(num_topics + unapproved_topics) AS total_topics
				FROM {db_prefix}boards' . (!empty($modSettings['recycle_enable']) && $modSettings['recycle_board'] > 0 ? '
				WHERE id_board != {int:recycle_board}' : ''),
				array(
					'recycle_board' => !empty($modSettings['recycle_board']) ? $modSettings['recycle_board'] : 0,
				)
			);
			$row = $smcFunc['db_fetch_assoc']($result);
			$smcFunc['db_free_result']($result);

			updateSettings(array('totalTopics' => $row['total_topics'] === null ? 0 : $row['total_topics']));
		}
		break;

	case 'postgroups':
		// Parameter two is the updated columns: we should check to see if we base groups off any of these.
		if ($parameter2 !== null && !in_array('posts', $parameter2))
			return;

		if (($postgroups = cache_get_data('updateStats:postgroups', 360)) == null)
		{
			// Fetch the postgroups!
			$request = $smcFunc['db_query']('', '
				SELECT id_group, min_posts
				FROM {db_prefix}membergroups
				WHERE min_posts != {int:min_posts}',
				array(
					'min_posts' => -1,
				)
			);
			$postgroups = array();
			while ($row = $smcFunc['db_fetch_assoc']($request))
				$postgroups[$row['id_group']] = $row['min_posts'];
			$smcFunc['db_free_result']($request);

			// Sort them this way because if it's done with MySQL it causes a filesort :(.
			arsort($postgroups);

			cache_put_data('updateStats:postgroups', $postgroups, 360);
		}

		// Oh great, they've screwed their post groups.
		if (empty($postgroups))
			return;

		// Set all membergroups from most posts to least posts.
		$conditions = '';
		foreach ($postgroups as $id => $min_posts)
		{
			$conditions .= '
					WHEN posts >= ' . $min_posts . (!empty($lastMin) ? ' AND posts <= ' . $lastMin : '') . ' THEN ' . $id;
			$lastMin = $min_posts;
		}

		// A big fat CASE WHEN... END is faster than a zillion UPDATE's ;).
		$smcFunc['db_query']('', '
			UPDATE {db_prefix}members
			SET id_post_group = CASE ' . $conditions . '
					ELSE 0
				END' . ($parameter1 != null ? '
			WHERE ' . (is_array($parameter1) ? 'id_member IN ({array_int:members})' : 'id_member = {int:members}') : ''),
			array(
				'members' => $parameter1,
			)
		);
		break;

		default:
			trigger_error('updateStats(): Invalid statistic type \'' . $type . '\'', E_USER_NOTICE);
	}
}

// Assumes the data has been htmlspecialchar'd.
function updateMemberData($members, $data)
{
	global $modSettings, $user_info, $smcFunc;

	$parameters = array();
	if (is_array($members))
	{
		$condition = 'id_member IN ({array_int:members})';
		$parameters['members'] = $members;
	}
	elseif ($members === null)
		$condition = '1=1';
	else
	{
		$condition = 'id_member = {int:member}';
		$parameters['member'] = $members;
	}

	if (isset($modSettings['integrate_change_member_data']) && function_exists($modSettings['integrate_change_member_data']))
	{
		// Only a few member variables are really interesting for integration.
		$integration_vars = array(
			'member_name',
			'real_name',
			'email_address',
			'id_group',
			'gender',
			'birthdate',
			'website_title',
			'website_url',
			'location',
			'hide_email',
			'time_format',
			'time_offset',
			'avatar',
			'lngfile',
		);
		$vars_to_integrate = array_intersect($integration_vars, array_keys($data));

		// Only proceed if there are any variables left to call the integration function.
		if (count($vars_to_integrate) != 0)
		{
			// Fetch a list of member_names if necessary
			if ((!is_array($members) && $members === $user_info['id']) || (is_array($members) && count($members) == 1 && in_array($user_info['id'], $members)))
				$member_names = array($user_info['username']);
			else
			{
				$member_names = array();
				$request = $smcFunc['db_query']('', '
					SELECT member_name
					FROM {db_prefix}members
					WHERE ' . $condition,
					$parameters
				);
				while ($row = $smcFunc['db_fetch_assoc']($request))
					$member_names[] = $row['member_name'];
				$smcFunc['db_free_result']($request);
			}

			if (!empty($member_names))
				foreach ($vars_to_integrate as $var)
					call_user_func($modSettings['integrate_change_member_data'], $member_names, $var, $data[$var]);
		}
	}

	// Everything is assumed to be a string unless it's in the below.
	$knownInts = array(
		'date_registered', 'posts', 'id_group', 'last_login', 'instant_messages', 'unread_messages',
		'new_pm', 'pm_prefs', 'gender', 'hide_email', 'show_online', 'pm_email_notify', 'pm_receive_from', 'karma_good', 'karma_bad',
		'notify_announcements', 'notify_send_body', 'notify_regularity', 'notify_types',
		'id_theme', 'is_activated', 'id_msg_last_visit', 'id_post_group', 'total_time_logged_in', 'warning',
	);
	$knownFloats = array(
		'time_offset',
	);

	$setString = '';
	foreach ($data as $var => $val)
	{
		$type = 'string';
		if (in_array($var, $knownInts))
			$type = 'int';
		elseif (in_array($var, $knownFloats))
			$type = 'float';
		elseif ($var == 'birthdate')
			$type = 'date';

		// Doing an increment?
		if ($type == 'int' && ($val === '+' || $val === '-'))
		{
			$val = $var . ' ' . $val . ' 1';
			$type = 'raw';
		}

		// Ensure posts, instant_messages, and unread_messages don't overflow or underflow.
		if (in_array($var, array('posts', 'instant_messages', 'unread_messages')))
		{
			if (preg_match('~^' . $var . ' (\+ |- |\+ -)([\d]+)~', $val, $match))
			{
				if ($match[1] != '+ ')
					$val = 'CASE WHEN ' . $var . ' <= ' . abs($match[2]) . ' THEN 0 ELSE ' . $val . ' END';
				$type = 'raw';
			}
		}

		$setString .= ' ' . $var . ' = {' . $type . ':p_' . $var . '},';
		$parameters['p_' . $var] = $val;
	}

	$smcFunc['db_query']('', '
		UPDATE {db_prefix}members
		SET' . substr($setString, 0, -1) . '
		WHERE ' . $condition,
		$parameters
	);

	updateStats('postgroups', $members, array_keys($data));

	// Clear any caching?
	if (!empty($modSettings['cache_enable']) && $modSettings['cache_enable'] >= 2 && !empty($members))
	{
		if (!is_array($members))
			$members = array($members);

		foreach ($members as $member)
		{
			if ($modSettings['cache_enable'] >= 3)
			{
				cache_put_data('member_data-profile-' . $member, null, 120);
				cache_put_data('member_data-normal-' . $member, null, 120);
				cache_put_data('member_data-minimal-' . $member, null, 120);
			}
			cache_put_data('user_settings-' . $member, null, 60);
		}
	}
}

// Updates the settings table as well as $modSettings... only does one at a time if $update is true.
function updateSettings($changeArray, $update = false, $debug = false)
{
	global $modSettings, $smcFunc;

	if (empty($changeArray) || !is_array($changeArray))
		return;

	// In some cases, this may be better and faster, but for large sets we don't want so many UPDATEs.
	if ($update)
	{
		foreach ($changeArray as $variable => $value)
		{
			$smcFunc['db_query']('', '
				UPDATE {db_prefix}settings
				SET value = {' . ($value === false || $value === true ? 'raw' : 'string') . ':value}
				WHERE variable = {string:variable}',
				array(
					'value' => $value === true ? 'value + 1' : ($value === false ? 'value - 1' : $value),
					'variable' => $variable,
				)
			);
			$modSettings[$variable] = $value === true ? $modSettings[$variable] + 1 : ($value === false ? $modSettings[$variable] - 1 : $value);
		}

		// Clean out the cache and make sure the cobwebs are gone too.
		cache_put_data('modSettings', null, 90);

		return;
	}

	$replaceArray = array();
	foreach ($changeArray as $variable => $value)
	{
		// Don't bother if it's already like that ;).
		if (isset($modSettings[$variable]) && $modSettings[$variable] == $value)
			continue;
		// If the variable isn't set, but would only be set to nothing'ness, then don't bother setting it.
		elseif (!isset($modSettings[$variable]) && empty($value))
			continue;

		$replaceArray[] = array($variable, $value);

		$modSettings[$variable] = $value;
	}

	if (empty($replaceArray))
		return;

	$smcFunc['db_insert']('replace',
		'{db_prefix}settings',
		array('variable' => 'string-255', 'value' => 'string-65534'),
		$replaceArray,
		array('variable')
	);

	// Kill the cache - it needs redoing now, but we won't bother ourselves with that here.
	cache_put_data('modSettings', null, 90);
}

// Constructs a page list.
// $pageindex = constructPageIndex($scripturl . '?board=' . $board, $_REQUEST['start'], $num_messages, $maxindex, true);
function constructPageIndex($base_url, &$start, $max_value, $num_per_page, $flexible_start = false)
{
	global $modSettings;

	// Save whether $start was less than 0 or not.
	$start_invalid = $start < 0;

	// Make sure $start is a proper variable - not less than 0.
	if ($start_invalid)
		$start = 0;
	// Not greater than the upper bound.
	elseif ($start >= $max_value)
		$start = max(0, (int) $max_value - (((int) $max_value % (int) $num_per_page) == 0 ? $num_per_page : ((int) $max_value % (int) $num_per_page)));
	// And it has to be a multiple of $num_per_page!
	else
		$start = max(0, (int) $start - ((int) $start % (int) $num_per_page));

	// Wireless will need the protocol on the URL somewhere.
	if (WIRELESS)
		$base_url .= ';' . WIRELESS_PROTOCOL;

	$base_link = '<a class="navPages" href="' . ($flexible_start ? $base_url : strtr($base_url, array('%' => '%%')) . ';start=%1$d') . '">%2$s</a> ';

	// Compact pages is off or on?
	if (empty($modSettings['compactTopicPagesEnable']))
	{
		// Show the left arrow.
		$pageindex = $start == 0 ? ' ' : sprintf($base_link, $start - $num_per_page, '&#171;');

		// Show all the pages.
		$display_page = 1;
		for ($counter = 0; $counter < $max_value; $counter += $num_per_page)
			$pageindex .= $start == $counter && !$start_invalid ? '<strong>' . $display_page++ . '</strong> ' : sprintf($base_link, $counter, $display_page++);

		// Show the right arrow.
		$display_page = ($start + $num_per_page) > $max_value ? $max_value : ($start + $num_per_page);
		if ($start != $counter - $max_value && !$start_invalid)
			$pageindex .= $display_page > $counter - $num_per_page ? ' ' : sprintf($base_link, $display_page, '&#187;');
	}
	else
	{
		// If they didn't enter an odd value, pretend they did.
		$PageContiguous = (int) ($modSettings['compactTopicPagesContiguous'] - ($modSettings['compactTopicPagesContiguous'] % 2)) / 2;

		// Show the first page. (>1< ... 6 7 [8] 9 10 ... 15)
		if ($start > $num_per_page * $PageContiguous)
			$pageindex = sprintf($base_link, 0, '1');
		else
			$pageindex = '';

		// Show the ... after the first page.  (1 >...< 6 7 [8] 9 10 ... 15)
		if ($start > $num_per_page * ($PageContiguous + 1))
			$pageindex .= '<span style="font-weight: bold;" onclick="expandPages(this, \'' . ($flexible_start ? strtr($base_url, array('\'' => '\\\'')) : strtr($base_url, array('%' => '%%', '\'' => '\\\'')) . ';start=%1$d') . '\', ' . $num_per_page . ', ' . ($start - $num_per_page * $PageContiguous) . ', ' . $num_per_page . ');" onmouseover="this.style.cursor=\'pointer\';"> ... </span>';

		// Show the pages before the current one. (1 ... >6 7< [8] 9 10 ... 15)
		for ($nCont = $PageContiguous; $nCont >= 1; $nCont--)
			if ($start >= $num_per_page * $nCont)
			{
				$tmpStart = $start - $num_per_page * $nCont;
				$pageindex.= sprintf($base_link, $tmpStart, $tmpStart / $num_per_page + 1);
			}

		// Show the current page. (1 ... 6 7 >[8]< 9 10 ... 15)
		if (!$start_invalid)
			$pageindex .= '[<strong>' . ($start / $num_per_page + 1) . '</strong>] ';
		else
			$pageindex .= sprintf($base_link, $start, $start / $num_per_page + 1);

		// Show the pages after the current one... (1 ... 6 7 [8] >9 10< ... 15)
		$tmpMaxPages = (int) (($max_value - 1) / $num_per_page) * $num_per_page;
		for ($nCont = 1; $nCont <= $PageContiguous; $nCont++)
			if ($start + $num_per_page * $nCont <= $tmpMaxPages)
			{
				$tmpStart = $start + $num_per_page * $nCont;
				$pageindex .= sprintf($base_link, $tmpStart, $tmpStart / $num_per_page + 1);
			}

		// Show the '...' part near the end. (1 ... 6 7 [8] 9 10 >...< 15)
		if ($start + $num_per_page * ($PageContiguous + 1) < $tmpMaxPages)
			$pageindex .= '<span style="font-weight: bold;" onclick="expandPages(this, \'' . ($flexible_start ? strtr($base_url, array('\'' => '\\\'')) : strtr($base_url, array('%' => '%%', '\'' => '\\\'')) . ';start=%1$d') . '\', ' . ($start + $num_per_page * ($PageContiguous + 1)) . ', ' . $tmpMaxPages . ', ' . $num_per_page . ');" onmouseover="this.style.cursor=\'pointer\';"> ... </span>';

		// Show the last number in the list. (1 ... 6 7 [8] 9 10 ... >15<)
		if ($start + $num_per_page * $PageContiguous < $tmpMaxPages)
			$pageindex .= sprintf($base_link, $tmpMaxPages, $tmpMaxPages / $num_per_page + 1);
	}

	return $pageindex;
}

// Formats a number to display in the style of the admin's choosing.
function comma_format($number, $override_decimal_count = false)
{
	global $txt;
	static $thousands_separator = null, $decimal_separator = null, $decimal_count = null;

	// !!! Should, perhaps, this just be handled in the language files, and not a mod setting?
	// (French uses 1 234,00 for example... what about a multilingual forum?)

	// Cache these values...
	if ($decimal_separator === null)
	{
		// Not set for whatever reason?
		if (empty($txt['number_format']) || preg_match('~^1([^\d]*)?234([^\d]*)(0*?)$~', $txt['number_format'], $matches) != 1)
			return $number;

		// Cache these each load...
		$thousands_separator = $matches[1];
		$decimal_separator = $matches[2];
		$decimal_count = strlen($matches[3]);
	}

	// Format the string with our friend, number_format.
	return number_format($number, is_float($number) ? ($override_decimal_count === false ? $decimal_count : $override_decimal_count) : 0, $decimal_separator, $thousands_separator);
}

// Format a time to make it look purdy.
function timeformat($log_time, $show_today = true, $offset_type = false)
{
	global $user_info, $txt, $modSettings, $smcFunc;

	// Offset the time.
	if (!$offset_type)
		$time = $log_time + ($user_info['time_offset'] + $modSettings['time_offset']) * 3600;
	// Just the forum offset?
	elseif ($offset_type == 'forum')
		$time = $log_time + $modSettings['time_offset'] * 3600;
	else
		$time = $log_time;

	// We can't have a negative date (on Windows, at least.)
	if ($log_time < 0)
		$log_time = 0;

	// Today and Yesterday?
	if ($modSettings['todayMod'] >= 1 && $show_today === true)
	{
		// Get the current time.
		$nowtime = forum_time();

		$then = @getdate($time);
		$now = @getdate($nowtime);

		// Try to make something of a time format string...
		$s = strpos($user_info['time_format'], '%S') === false ? '' : ':%S';
		if (strpos($user_info['time_format'], '%H') === false && strpos($user_info['time_format'], '%T') === false)
		{
			$h = strpos($user_info['time_format'], '%l') === false ? '%I' : '%l';
			$today_fmt = $h . ':%M' . $s . ' %p';
		}
		else
			$today_fmt = '%H:%M' . $s;

		// Same day of the year, same year.... Today!
		if ($then['yday'] == $now['yday'] && $then['year'] == $now['year'])
			return $txt['today'] . timeformat($log_time, $today_fmt, $offset_type);

		// Day-of-year is one less and same year, or it's the first of the year and that's the last of the year...
		if ($modSettings['todayMod'] == '2' && (($then['yday'] == $now['yday'] - 1 && $then['year'] == $now['year']) || ($now['yday'] == 0 && $then['year'] == $now['year'] - 1) && $then['mon'] == 12 && $then['mday'] == 31))
			return $txt['yesterday'] . timeformat($log_time, $today_fmt, $offset_type);
	}

	$str = !is_bool($show_today) ? $show_today : $user_info['time_format'];

	if (setlocale(LC_TIME, $txt['lang_locale']))
	{
		foreach (array('%a', '%A', '%b', '%B') as $token)
			if (strpos($str, $token) !== false)
				$str = str_replace($token, !empty($txt['lang_capitalize_dates']) ? $smcFunc['ucwords'](strftime($token, $time)) : strftime($token, $time), $str);
	}
	else
	{
		// Do-it-yourself time localization.  Fun.
		foreach (array('%a' => 'days_short', '%A' => 'days', '%b' => 'months_short', '%B' => 'months') as $token => $text_label)
			if (strpos($str, $token) !== false)
				$str = str_replace($token, $txt[$text_label][(int) strftime($token === '%a' || $token === '%A' ? '%w' : '%m', $time)], $str);
		if (strpos($str, '%p'))
			$str = str_replace('%p', (strftime('%H', $time) < 12 ? 'am' : 'pm'), $str);
	}

	// Format any other characters..
	return strftime($str, $time);
}

// Removes special entities from strings.  Compatibility...
function un_htmlspecialchars($string)
{
	static $translation;

	if (!isset($translation))
		$translation = array_flip(get_html_translation_table(HTML_SPECIALCHARS, ENT_QUOTES)) + array('&#039;' => '\'', '&nbsp;' => ' ');

	return strtr($string, $translation);
}

// Shorten a subject + internationalization concerns.
function shorten_subject($subject, $len)
{
	global $smcFunc;

	// It was already short enough!
	if ($smcFunc['strlen']($subject) <= $len)
		return $subject;

	// Shorten it by the length it was too long, and strip off junk from the end.
	return $smcFunc['substr']($subject, 0, $len) . '...';
}

// The current time with offset.
function forum_time($use_user_offset = true, $timestamp = null)
{
	global $user_info, $modSettings;

	if ($timestamp === null)
		$timestamp = time();
	elseif ($timestamp == 0)
		return 0;

	return $timestamp + ($modSettings['time_offset'] + ($use_user_offset ? $user_info['time_offset'] : 0)) * 3600;
}

// This gets all possible permutations of an array.
function permute($array)
{
	$orders = array($array);

	$n = count($array);
	$p = range(0, $n);
	for ($i = 1; $i < $n; null)
	{
		$p[$i]--;
		$j = $i % 2 != 0 ? $p[$i] : 0;

		$temp = $array[$i];
		$array[$i] = $array[$j];
		$array[$j] = $temp;

		for ($i = 1; $p[$i] == 0; $i++)
			$p[$i] = 1;

		$orders[] = $array;
	}

	return $orders;
}

// Parse bulletin board code in a string, as well as smileys optionally.
function parse_bbc($message, $smileys = true, $cache_id = '', $parse_tags = array())
{
	global $txt, $scripturl, $context, $modSettings, $user_info, $smcFunc;
	static $bbc_codes = array(), $itemcodes = array(), $no_autolink_tags = array();
	static $disabled;

	// Never show smileys for wireless clients.  More bytes, can't see it anyway :P.
	if (WIRELESS)
		$smileys = false;
	elseif ($smileys !== null && ($smileys == '1' || $smileys == '0'))
		$smileys = (bool) $smileys;

	if (empty($modSettings['enableBBC']) && $message !== false)
	{
		if ($smileys === true)
			parsesmileys($message);

		return $message;
	}

	// Just in case it wasn't determined yet whether UTF-8 is enabled.
	if (!isset($context['utf8']))
		$context['utf8'] = (empty($modSettings['global_character_set']) ? $txt['lang_character_set'] : $modSettings['global_character_set']) === 'UTF-8';

	// If we are not doing every tag then we don't cache this run.
	if (!empty($parse_tags) && !empty($bbc_codes))
	{
		$temp_bbc = $bbc_codes;
		$bbc_codes = array();
	}

	// Sift out the bbc for a performance improvement.
	if (empty($bbc_codes) || $message === false || !empty($parse_tags))
	{
		if (!empty($modSettings['disabledBBC']))
		{
			$temp = explode(',', strtolower($modSettings['disabledBBC']));

			foreach ($temp as $tag)
				$disabled[trim($tag)] = true;
		}

		if (empty($modSettings['enableEmbeddedFlash']))
			$disabled['flash'] = true;

		/* The following bbc are formatted as an array, with keys as follows:

			tag: the tag's name - should be lowercase!

			type: one of...
				- (missing): [tag]parsed content[/tag]
				- unparsed_equals: [tag=xyz]parsed content[/tag]
				- parsed_equals: [tag=parsed data]parsed content[/tag]
				- unparsed_content: [tag]unparsed content[/tag]
				- closed: [tag], [tag/], [tag /]
				- unparsed_commas: [tag=1,2,3]parsed content[/tag]
				- unparsed_commas_content: [tag=1,2,3]unparsed content[/tag]
				- unparsed_equals_content: [tag=...]unparsed content[/tag]

			parameters: an optional array of parameters, for the form
			  [tag abc=123]content[/tag].  The array is an associative array
			  where the keys are the parameter names, and the values are an
			  array which may contain the following:
				- match: a regular expression to validate and match the value.
				- quoted: true if the value should be quoted.
				- validate: callback to evaluate on the data, which is $data.
				- value: a string in which to replace $1 with the data.
				  either it or validate may be used, not both.
				- optional: true if the parameter is optional.

			test: a regular expression to test immediately after the tag's
			  '=', ' ' or ']'.  Typically, should have a \] at the end.
			  Optional.

			content: only available for unparsed_content, closed,
			  unparsed_commas_content, and unparsed_equals_content.
			  $1 is replaced with the content of  the tag.  Parameters
			  are replaced in the form {param}.  For unparsed_commas_content,
			  $2, $3, ..., $n are replaced.

			before: only when content is not used, to go before any
			  content.  For unparsed_equals, $1 is replaced with the value.
			  For unparsed_commas, $1, $2, ..., $n are replaced.

			after: similar to before in every way, except that it is used
			  when the tag is closed.

			disabled_content: used in place of content when the tag is
			  disabled.  For closed, default is '', otherwise it is '$1' if
			  block_level is false, '<div>$1</div>' elsewise.

			disabled_before: used in place of before when disabled.  Defaults
			  to '<div>' if block_level, '' if not.

			disabled_after: used in place of after when disabled.  Defaults
			  to '</div>' if block_level, '' if not.

			block_level: set to true the tag is a "block level" tag, similar
			  to HTML.  Block level tags cannot be nested inside tags that are
			  not block level, and will not be implicitly closed as easily.
			  One break following a block level tag may also be removed.

			trim: if set, and 'inside' whitespace after the begin tag will be
			  removed.  If set to 'outside', whitespace after the end tag will
			  meet the same fate.

			validate: except when type is missing or 'closed', a callback to
			  validate the data as $data.  Depending on the tag's type, $data
			  may be a string or an array of strings (corresponding to the
			  replacement.)

			quoted: when type is 'unparsed_equals' or 'parsed_equals' only,
			  may be not set, 'optional', or 'required' corresponding to if
			  the content may be quoted.  This allows the parser to read
			  [tag="abc]def[esdf]"] properly.

			require_parents: an array of tag names, or not set.  If set, the
			  enclosing tag *must* be one of the listed tags, or parsing won't
			  occur.

			require_children: similar to require_parents, if set children
			  won't be parsed if they are not in the list.

			disallow_children: similar to, but very different from,
			  require_children, if it is set the listed tags will not be
			  parsed inside the tag.

			parsed_tags_allowed: an array restricting what BBC can be in the
			  parsed_equals parameter, if desired.
		*/

		$codes = array(
			array(
				'tag' => 'abbr',
				'type' => 'unparsed_equals',
				'before' => '<abbr title="$1">',
				'after' => '</abbr>',
				'quoted' => 'optional',
				'disabled_after' => ' ($1)',
			),
			array(
				'tag' => 'acronym',
				'type' => 'unparsed_equals',
				'before' => '<acronym title="$1">',
				'after' => '</acronym>',
				'quoted' => 'optional',
				'disabled_after' => ' ($1)',
			),
			array(
				'tag' => 'anchor',
				'type' => 'unparsed_equals',
				'test' => '[#]?([A-Za-z][A-Za-z0-9_\-]*)\]',
				'before' => '<span id="post_$1">',
				'after' => '</span>',
			),
			array(
				'tag' => 'b',
				'before' => '<strong>',
				'after' => '</strong>',
			),
			array(
				'tag' => 'bdo',
				'type' => 'unparsed_equals',
				'before' => '<bdo dir="$1">',
				'after' => '</bdo>',
				'test' => '(rtl|ltr)\]',
				'block_level' => true,
			),
			array(
				'tag' => 'black',
				'before' => '<span style="color: black;" class="bbc_color">',
				'after' => '</span>',
			),
			array(
				'tag' => 'blue',
				'before' => '<span style="color: blue;" class="bbc_color">',
				'after' => '</span>',
			),
			array(
				'tag' => 'br',
				'type' => 'closed',
				'content' => '<br />',
			),
			array(
				'tag' => 'code',
				'type' => 'unparsed_content',
				'content' => '<div class="codeheader">' . $txt['code'] . ': <a href="javascript:void(0);" onclick="return smfSelectText(this);" class="codeoperation">' . $txt['code_select'] . '</a></div><code>$1</code>',
				// !!! Maybe this can be simplified?
				'validate' => isset($disabled['code']) ? null : create_function('&$tag, &$data, $disabled', '
					global $context;

					if (!isset($disabled[\'code\']))
					{
						$php_parts = preg_split(\'~(&lt;\?php|\?&gt;)~\', $data, -1, PREG_SPLIT_DELIM_CAPTURE);

						for ($php_i = 0, $php_n = count($php_parts); $php_i < $php_n; $php_i++)
						{
							// Do PHP code coloring?
							if ($php_parts[$php_i] != \'&lt;?php\')
								continue;

							$php_string = \'\';
							while ($php_i + 1 < count($php_parts) && $php_parts[$php_i] != \'?&gt;\')
							{
								$php_string .= $php_parts[$php_i];
								$php_parts[$php_i++] = \'\';
							}
							$php_parts[$php_i] = highlight_php_code($php_string . $php_parts[$php_i]);
						}

						// Fix the PHP code stuff...
						$data = str_replace("<pre style=\"display: inline;\">\t</pre>", "\t", implode(\'\', $php_parts));

						// Older browsers are annoying, aren\'t they?
						if ($context[\'browser\'][\'is_ie4\'] || $context[\'browser\'][\'is_ie5\'] || $context[\'browser\'][\'is_ie5.5\'])
							$data = str_replace("\t", "<pre style=\"display: inline;\">\t</pre>", $data);
						elseif (!$context[\'browser\'][\'is_gecko\'])
							$data = str_replace("\t", "<span style=\"white-space: pre;\">\t</span>", $data);
						else
							$data = str_replace("\t", "&nbsp;&nbsp;&nbsp;", $data);

						// Recent Opera bug requiring temporary fix. &nsbp; is needed before </code> to avoid broken selection.
						if ($context[\'browser\'][\'is_opera\'])
							$data .= \'&nbsp;\';
					}'),
				'block_level' => true,
			),
			array(
				'tag' => 'code',
				'type' => 'unparsed_equals_content',
				'content' => '<div class="codeheader">' . $txt['code'] . ': ($2) <a href="#" onclick="return smfSelectText(this);" class="codeoperation">' . $txt['code_select'] . '</a></div><code>$1</code>',
				// !!! Maybe this can be simplified?
				'validate' => isset($disabled['code']) ? null : create_function('&$tag, &$data, $disabled', '
					global $context;

					if (!isset($disabled[\'code\']))
					{
						$php_parts = preg_split(\'~(&lt;\?php|\?&gt;)~\', $data[0], -1, PREG_SPLIT_DELIM_CAPTURE);

						for ($php_i = 0, $php_n = count($php_parts); $php_i < $php_n; $php_i++)
						{
							// Do PHP code coloring?
							if ($php_parts[$php_i] != \'&lt;?php\')
								continue;

							$php_string = \'\';
							while ($php_i + 1 < count($php_parts) && $php_parts[$php_i] != \'?&gt;\')
							{
								$php_string .= $php_parts[$php_i];
								$php_parts[$php_i++] = \'\';
							}
							$php_parts[$php_i] = highlight_php_code($php_string . $php_parts[$php_i]);
						}

						// Fix the PHP code stuff...
						$data[0] = str_replace("<pre style=\"display: inline;\">\t</pre>", "\t", implode(\'\', $php_parts));

						// Older browsers are annoying, aren\'t they?
						if ($context[\'browser\'][\'is_ie4\'] || $context[\'browser\'][\'is_ie5\'] || $context[\'browser\'][\'is_ie5.5\'])
							$data[0] = str_replace("\t", "<pre style=\"display: inline;\">\t</pre>", $data[0]);
						elseif (!$context[\'browser\'][\'is_gecko\'])
							$data[0] = str_replace("\t", "<span style=\"white-space: pre;\">\t</span>", $data[0]);
						else
							$data[0] = str_replace("\t", "&nbsp;&nbsp;&nbsp;", $data[0]);

						// Recent Opera bug requiring temporary fix. &nsbp; is needed before </code> to avoid broken selection.
						if ($context[\'browser\'][\'is_opera\'])
							$data[0] .= \'&nbsp;\';
					}'),
				'block_level' => true,
			),
			array(
				'tag' => 'center',
				'before' => '<div align="center">',
				'after' => '</div>',
				'block_level' => true,
			),
			array(
				'tag' => 'color',
				'type' => 'unparsed_equals',
				'test' => '(#[\da-fA-F]{3}|#[\da-fA-F]{6}|[A-Za-z]{1,20}|rgb\(\d{1,3}, ?\d{1,3}, ?\d{1,3}\))\]',
				'before' => '<span style="color: $1;" class="bbc_color">',
				'after' => '</span>',
			),
			array(
				'tag' => 'email',
				'type' => 'unparsed_content',
				'content' => '<a href="mailto:$1" class="bbc_email">$1</a>',
				// !!! Should this respect guest_hideContacts?
				'validate' => create_function('&$tag, &$data, $disabled', '$data = strtr($data, array(\'<br />\' => \'\'));'),
			),
			array(
				'tag' => 'email',
				'type' => 'unparsed_equals',
				'before' => '<a href="mailto:$1" class="bbc_email">',
				'after' => '</a>',
				// !!! Should this respect guest_hideContacts?
				'disallow_children' => array('email', 'ftp', 'url', 'iurl'),
				'disabled_after' => ' ($1)',
			),
			array(
				'tag' => 'ftp',
				'type' => 'unparsed_content',
				'content' => '<a href="$1" class="bbc_ftp new_win" target="_blank">$1</a>',
				'validate' => create_function('&$tag, &$data, $disabled', '$data = strtr($data, array(\'<br />\' => \'\'));'),
			),
			array(
				'tag' => 'ftp',
				'type' => 'unparsed_equals',
				'before' => '<a href="$1" class="bbc_ftp new_win" target="_blank">',
				'after' => '</a>',
				'disallow_children' => array('email', 'ftp', 'url', 'iurl'),
				'disabled_after' => ' ($1)',
			),
			array(
				'tag' => 'font',
				'type' => 'unparsed_equals',
				'test' => '[A-Za-z0-9_,\-\s]+?\]',
				'before' => '<span style="font-family: $1;" class="bbc_font">',
				'after' => '</span>',
			),
			array(
				'tag' => 'flash',
				'type' => 'unparsed_commas_content',
				'test' => '\d+,\d+\]',
				'content' => ($context['browser']['is_ie'] && !$context['browser']['is_mac_ie'] ? '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="$2" height="$3"><param name="movie" value="$1" /><param name="play" value="true" /><param name="loop" value="true" /><param name="quality" value="high" /><param name="AllowScriptAccess" value="never" /><embed src="$1" width="$2" height="$3" play="true" loop="true" quality="high" AllowScriptAccess="never" /><noembed><a href="$1" target="_blank" class="new_win">$1</a></noembed></object>' : '<embed type="application/x-shockwave-flash" src="$1" width="$2" height="$3" play="true" loop="true" quality="high" AllowScriptAccess="never" /><noembed><a href="$1" target="_blank" class="new_win">$1</a></noembed>'),
				'validate' => create_function('&$tag, &$data, $disabled', '
					if (isset($disabled[\'url\']))
						$tag[\'content\'] = \'$1\';'),
				'disabled_content' => '<a href="$1" target="_blank" class="new_win">$1</a>',
			),
			array(
				'tag' => 'green',
				'before' => '<span style="color: green;" class="bbc_color">',
				'after' => '</span>',
			),
			array(
				'tag' => 'glow',
				'type' => 'unparsed_commas',
				'test' => '[#0-9a-zA-Z\-]{3,12},([012]\d{1,2}|\d{1,2})(,[^]]+)?\]',
				'before' => $context['browser']['is_ie'] ? '<table border="0" cellpadding="0" cellspacing="0" style="display: inline; vertical-align: middle; font: inherit;"><tr><td style="filter: Glow(color=$1, strength=$2); font: inherit;">' : '<span style="text-shadow: $1 1px 1px 1px">',
				'after' => $context['browser']['is_ie'] ? '</td></tr></table> ' : '</span>',
			),
			array(
				'tag' => 'hr',
				'type' => 'closed',
				'content' => '<hr />',
				'block_level' => true,
			),
			array(
				'tag' => 'html',
				'type' => 'unparsed_content',
				'content' => '$1',
				'block_level' => true,
				'disabled_content' => '$1',
			),
			array(
				'tag' => 'img',
				'type' => 'unparsed_content',
				'parameters' => array(
					'alt' => array('optional' => true),
					'width' => array('optional' => true, 'value' => ' width="$1"', 'match' => '(\d+)'),
					'height' => array('optional' => true, 'value' => ' height="$1"', 'match' => '(\d+)'),
				),
				'content' => '<img src="$1" alt="{alt}"{width}{height} class="bbc_img" />',
				'validate' => create_function('&$tag, &$data, $disabled', '$data = strtr($data, array(\'<br />\' => \'\'));'),
				'disabled_content' => '($1)',
			),
			array(
				'tag' => 'img',
				'type' => 'unparsed_content',
				'content' => '<img src="$1" alt="" class="bbc_img" />',
				'validate' => create_function('&$tag, &$data, $disabled', '$data = strtr($data, array(\'<br />\' => \'\'));'),
				'disabled_content' => '($1)',
			),
			array(
				'tag' => 'i',
				'before' => '<em>',
				'after' => '</em>',
			),
			array(
				'tag' => 'iurl',
				'type' => 'unparsed_content',
				'content' => '<a href="$1" class="bbc_link">$1</a>',
				'validate' => create_function('&$tag, &$data, $disabled', '$data = strtr($data, array(\'<br />\' => \'\'));'),
			),
			array(
				'tag' => 'iurl',
				'type' => 'unparsed_equals',
				'before' => '<a href="$1" class="bbc_link">',
				'after' => '</a>',
				'validate' => create_function('&$tag, &$data, $disabled', '
					if (substr($data, 0, 1) == \'#\')
						$data = \'#post_\' . substr($data, 1);'),
				'disallow_children' => array('email', 'ftp', 'url', 'iurl'),
				'disabled_after' => ' ($1)',
			),
			array(
				'tag' => 'li',
				'before' => '<li>',
				'after' => '</li>',
				'trim' => 'outside',
				'require_parents' => array('list'),
				'block_level' => true,
				'disabled_before' => '',
				'disabled_after' => '<br />',
			),
			array(
				'tag' => 'list',
				'before' => '<ul class="bbc_list">',
				'after' => '</ul>',
				'trim' => 'inside',
				'require_children' => array('li', 'list'),
				'block_level' => true,
			),
			array(
				'tag' => 'list',
				'parameters' => array(
					'type' => array('match' => '(none|disc|circle|square|decimal|decimal-leading-zero|lower-roman|upper-roman|lower-alpha|upper-alpha|lower-greek|lower-latin|upper-latin|hebrew|armenian|georgian|cjk-ideographic|hiragana|katakana|hiragana-iroha|katakana-iroha)'),
				),
				'before' => '<ul class="bbc_list" style="list-style-type: {type};">',
				'after' => '</ul>',
				'trim' => 'inside',
				'require_children' => array('li'),
				'block_level' => true,
			),
			array(
				'tag' => 'left',
				'before' => '<div style="text-align: left;">',
				'after' => '</div>',
				'block_level' => true,
			),
			array(
				'tag' => 'ltr',
				'before' => '<div dir="ltr">',
				'after' => '</div>',
				'block_level' => true,
			),
			array(
				'tag' => 'me',
				'type' => 'unparsed_equals',
				'before' => '<div class="meaction">* $1 ',
				'after' => '</div>',
				'quoted' => 'optional',
				'block_level' => true,
				'disabled_before' => '/me ',
				'disabled_after' => '<br />',
			),
			array(
				'tag' => 'move',
				'before' => '<marquee>',
				'after' => '</marquee>',
				'block_level' => true,
			),
			array(
				'tag' => 'nobbc',
				'type' => 'unparsed_content',
				'content' => '$1',
			),
			array(
				'tag' => 'pre',
				'before' => '<pre>',
				'after' => '</pre>',
			),
			array(
				'tag' => 'php',
				'type' => 'unparsed_content',
				'content' => '<span class="phpcode">$1</span>',
				'validate' => isset($disabled['php']) ? null : create_function('&$tag, &$data, $disabled', '
					if (!isset($disabled[\'php\']))
					{
						$add_begin = substr(trim($data), 0, 5) != \'&lt;?\';
						$data = highlight_php_code($add_begin ? \'&lt;?php \' . $data . \'?&gt;\' : $data);
						if ($add_begin)
							$data = preg_replace(array(\'~^(.+?)&lt;\?.{0,40}?php(?:&nbsp;|\s)~\', \'~\?&gt;((?:</(font|span)>)*)$~\'), \'$1\', $data, 2);
					}'),
				'block_level' => false,
				'disabled_content' => '$1',
			),
			array(
				'tag' => 'quote',
				'before' => '<div class="quoteheader"><div class="topslice_quote">' . $txt['quote'] . '</div></div><blockquote>',
				'after' => '</blockquote><div class="quotefooter"><div class="botslice_quote"></div></div><br />',
				'block_level' => true,
			),
			array(
				'tag' => 'quote',
				'parameters' => array(
					'author' => array('match' => '(.{1,192}?)', 'quoted' => true),
				),
				'before' => '<div class="quoteheader"><div class="topslice_quote">' . $txt['quote_from'] . ': {author}</div></div><blockquote>',
				'after' => '</blockquote><div class="quotefooter"><div class="botslice_quote"></div></div><br />',
				'block_level' => true,
			),
			array(
				'tag' => 'quote',
				'type' => 'parsed_equals',
				'before' => '<div class="quoteheader"><div class="topslice_quote">' . $txt['quote_from'] . ': $1</div></div><blockquote>',
				'after'…