$pos1)
{
$pos = $pos1;
break;
}
$pos = $pos2 + 1;
}
$clean .= ' %s ';
$old_pos = $pos + 1;
}
$clean .= substr($db_string, $old_pos);
$clean = trim(strtolower(preg_replace(array('~\s+~s', '~/\*!40001 SQL_NO_CACHE \*/~', '~/\*!40000 USE INDEX \([A-Za-z\_]+?\) \*/~'), array(' ', '', ''), $clean)));
// We don't use UNION in SMF, at least so far. But it's useful for injections.
if (strpos($clean, 'union') !== false && preg_match('~(^|[^a-z])union($|[^[a-z])~s', $clean) != 0)
$fail = true;
// Comments? We don't use comments in our queries, we leave 'em outside!
elseif (strpos($clean, '/*') > 2 || strpos($clean, '--') !== false || strpos($clean, ';') !== false)
$fail = true;
// Trying to change passwords, slow us down, or something?
elseif (strpos($clean, 'sleep') !== false && preg_match('~(^|[^a-z])sleep($|[^[a-z])~s', $clean) != 0)
$fail = true;
elseif (strpos($clean, 'benchmark') !== false && preg_match('~(^|[^a-z])benchmark($|[^[a-z])~s', $clean) != 0)
$fail = true;
// Sub selects? We don't use those either.
elseif (preg_match('~\([^)]*?select~s', $clean) != 0)
$fail = true;
if (!empty($fail))
{
log_error('Hacking attempt...' . "\n" . $db_string, $file, $line);
fatal_error('Hacking attempt...', false);
}
}
$ret = mysql_query($db_string, $db_connection);
if ($ret === false && $file !== false)
$ret = db_error($db_string, $file, $line);
// Debugging.
if (isset($db_show_debug) && $db_show_debug === true)
$db_cache[$db_count]['t'] = array_sum(explode(' ', microtime())) - array_sum(explode(' ', $st));
return $ret;
}
function db_affected_rows()
{
global $db_connection;
return mysql_affected_rows($db_connection);
}
function db_insert_id()
{
global $db_connection;
return mysql_insert_id($db_connection);
}
// Update some basic statistics...
function updateStats($type, $parameter1 = null, $parameter2 = null)
{
global $db_prefix, $sourcedir, $modSettings;
switch ($type)
{
case 'member':
$changes = array(
'memberlist_updated' => time(),
);
// Are we using registration approval?
if (!empty($modSettings['registration_method']) && $modSettings['registration_method'] == 2)
{
// Update the latest activated member (highest ID_MEMBER) and count.
$result = db_query("
SELECT COUNT(*), MAX(ID_MEMBER)
FROM {$db_prefix}members
WHERE is_activated = 1", __FILE__, __LINE__);
list ($changes['totalMembers'], $changes['latestMember']) = mysql_fetch_row($result);
mysql_free_result($result);
// Get the latest activated member's display name.
$result = db_query("
SELECT realName
FROM {$db_prefix}members
WHERE ID_MEMBER = " . (int) $changes['latestMember'] . "
LIMIT 1", __FILE__, __LINE__);
list ($changes['latestRealName']) = mysql_fetch_row($result);
mysql_free_result($result);
// Update the amount of members awaiting approval - ignoring COPPA accounts, as you can't approve them until you get permission.
$result = db_query("
SELECT COUNT(*)
FROM {$db_prefix}members
WHERE is_activated IN (3, 4)", __FILE__, __LINE__);
list ($changes['unapprovedMembers']) = mysql_fetch_row($result);
mysql_free_result($result);
}
// If $parameter1 is a number, it's the new ID_MEMBER and #2 is the real name for a new registration.
elseif ($parameter1 !== null && $parameter1 !== false)
{
$changes['latestMember'] = $parameter1;
$changes['latestRealName'] = $parameter2;
updateSettings(array('totalMembers' => true), true);
}
// If $parameter1 is false, and approval is off, we need change nothing.
elseif ($parameter1 !== false)
{
// Update the latest member (highest ID_MEMBER) and count.
$result = db_query("
SELECT COUNT(*), MAX(ID_MEMBER)
FROM {$db_prefix}members", __FILE__, __LINE__);
list ($changes['totalMembers'], $changes['latestMember']) = mysql_fetch_row($result);
mysql_free_result($result);
// Get the latest member's display name.
$result = db_query("
SELECT realName
FROM {$db_prefix}members
WHERE ID_MEMBER = " . (int) $changes['latestMember'] . "
LIMIT 1", __FILE__, __LINE__);
list ($changes['latestRealName']) = mysql_fetch_row($result);
mysql_free_result($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.
$result = db_query("
SELECT SUM(numPosts) AS totalMessages, MAX(ID_LAST_MSG) AS maxMsgID
FROM {$db_prefix}boards", __FILE__, __LINE__);
$row = mysql_fetch_assoc($result);
mysql_free_result($result);
updateSettings(array(
'totalMessages' => $row['totalMessages'],
'maxMsgID' => $row['maxMsgID'] === null ? 0 : $row['maxMsgID']
));
}
break;
case 'subject':
// Remove the previous subject (if any).
db_query("
DELETE FROM {$db_prefix}log_search_subjects
WHERE ID_TOPIC = " . (int) $parameter1, __FILE__, __LINE__);
// Insert the new subject.
if ($parameter2 !== null)
{
$parameter1 = (int) $parameter1;
$parameter2 = text2words($parameter2);
$inserts = array();
foreach ($parameter2 as $word)
$inserts[] = "'$word', $parameter1";
if (!empty($inserts))
db_query("
INSERT IGNORE INTO {$db_prefix}log_search_subjects
(word, ID_TOPIC)
VALUES (" . implode('),
(', array_unique($inserts)) . ")", __FILE__, __LINE__);
}
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.
$result = db_query("
SELECT SUM(numTopics) AS totalTopics
FROM {$db_prefix}boards" . (!empty($modSettings['recycle_enable']) && $modSettings['recycle_board'] > 0 ? "
WHERE ID_BOARD != $modSettings[recycle_board]" : ''), __FILE__, __LINE__);
$row = mysql_fetch_assoc($result);
mysql_free_result($result);
updateSettings(array('totalTopics' => $row['totalTopics']));
}
break;
case 'calendar':
require_once($sourcedir . '/Calendar.php');
// Calculate the YYYY-MM-DD of the lowest and highest days.
$low_date = strftime('%Y-%m-%d', forum_time(false) - 24 * 3600);
$high_date = strftime('%Y-%m-%d', forum_time(false) + $modSettings['cal_days_for_index'] * 24 * 3600);
$holidays = calendarHolidayArray($low_date, $high_date);
$bday = calendarBirthdayArray($low_date, $high_date);
$events = calendarEventArray($low_date, $high_date, false);
// Cache the results in the settings.
updateSettings(array(
'cal_today_updated' => strftime('%Y%m%d', forum_time(false)),
'cal_today_holiday' => addslashes(serialize($holidays)),
'cal_today_birthday' => addslashes(serialize($bday)),
'cal_today_event' => addslashes(serialize($events))
));
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!
$request = db_query("
SELECT ID_GROUP, minPosts
FROM {$db_prefix}membergroups
WHERE minPosts != -1", __FILE__, __LINE__);
$postgroups = array();
while ($row = mysql_fetch_assoc($request))
$postgroups[$row['ID_GROUP']] = $row['minPosts'];
mysql_free_result($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 => $minPosts)
{
$conditions .= '
WHEN posts >= ' . $minPosts . (!empty($lastMin) ? ' AND posts <= ' . $lastMin : '') . ' THEN ' . $id;
$lastMin = $minPosts;
}
// A big fat CASE WHEN... END is faster than a zillion UPDATE's ;).
db_query("
UPDATE {$db_prefix}members
SET ID_POST_GROUP = CASE$conditions
ELSE 0
END" . ($parameter1 != null ? "
WHERE $parameter1" : ''), __FILE__, __LINE__);
break;
default:
trigger_error('updateStats(): Invalid statistic type \'' . $type . '\'', E_USER_NOTICE);
}
}
// Assumes the data has been slashed.
function updateMemberData($members, $data)
{
global $db_prefix, $modSettings, $ID_MEMBER, $user_info;
if (is_array($members))
$condition = 'ID_MEMBER IN (' . implode(', ', $members) . ')
LIMIT ' . count($members);
elseif ($members === null)
$condition = '1';
else
$condition = 'ID_MEMBER = ' . $members . '
LIMIT 1';
if (isset($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(
'memberName',
'realName',
'emailAddress',
'ID_GROUP',
'gender',
'birthdate',
'websiteTitle',
'websiteUrl',
'location',
'hideEmail',
'timeFormat',
'timeOffset',
'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 memberNames if necessary
if ((!is_array($members) && $members === $ID_MEMBER) || (is_array($members) && count($members) == 1 && in_array($ID_MEMBER, $members)))
$memberNames = array($user_info['username']);
else
{
$memberNames = array();
$request = db_query("
SELECT memberName
FROM {$db_prefix}members
WHERE $condition", __FILE__, __LINE__);
while ($row = mysql_fetch_assoc($request))
$memberNames[] = $row['memberName'];
mysql_free_result($request);
}
if (!empty($memberNames))
foreach ($vars_to_integrate as $var)
call_user_func($modSettings['integrate_change_member_data'], $memberNames, $var, stripslashes($data[$var]));
}
}
foreach ($data as $var => $val)
{
if ($val === '+')
$data[$var] = $var . ' + 1';
elseif ($val === '-')
$data[$var] = $var . ' - 1';
}
// Ensure posts, instantMessages, and unreadMessages never go below 0.
foreach(array('posts', 'instantMessages', 'unreadMessages') as $type)
if (isset($data[$type]) && preg_match('~^' . $type . ' - ([\d]+)~', $data[$type], $match) === 1)
$data[$type] = 'CASE WHEN ' . $type . ' <= ' . $match[1] . ' THEN 0 ELSE ' . $data[$type] . ' END';
$setString = '';
foreach ($data as $var => $val)
{
$setString .= "
$var = $val,";
}
db_query("
UPDATE {$db_prefix}members
SET" . substr($setString, 0, -1) . '
WHERE ' . $condition, __FILE__, __LINE__);
updateStats('postgroups', $condition, array_keys($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 $update is true.
// All input variables and values are assumed to have escaped apostrophes(')!
function updateSettings($changeArray, $update = false)
{
global $db_prefix, $modSettings;
if (empty($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 => $value)
{
db_query("
UPDATE {$db_prefix}settings
SET value = " . ($value === true ? 'value + 1' : ($value === false ? 'value - 1' : "'$value'")) . "
WHERE variable = '$variable'
LIMIT 1", __FILE__, __LINE__);
$modSettings[$variable] = $value === true ? $modSettings[$variable] + 1 : ($value === false ? $modSettings[$variable] - 1 : stripslashes($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] == stripslashes($value))
continue;
// If the variable isn't set, but would only be set to nothing'ness, then don't bother setting it.
elseif (!isset($modSettings[$variable]) && empty($value))
continue;
$replaceArray[] = "(SUBSTRING('$variable', 1, 255), SUBSTRING('$value', 1, 65534))";
$modSettings[$variable] = stripslashes($value);
}
if (empty($replaceArray))
return;
db_query("
REPLACE INTO {$db_prefix}settings
(variable, value)
VALUES " . implode(',
', $replaceArray), __FILE__, __LINE__);
// 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;
$base_link = '%s ';
// Compact pages is off or on?
if (empty($modSettings['compactTopicPagesEnable']))
{
// Show the left arrow.
$pageindex = $start == 0 ? ' ' : sprintf($base_link, $start - $num_per_page, '«');
// Show all the pages.
$display_page = 1;
for ($counter = 0; $counter < $max_value; $counter += $num_per_page)
$pageindex .= $start == $counter && !$start_invalid ? '' . $display_page++ . ' ' : sprintf($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, '»');
}
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))
$pageindex .= ' ... ';
// Show the pages before the current one. (1 ... >6 7< [8] 9 10 ... 15)
for ($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)
$pageindex .= '[' . ($start / $num_per_page + 1) . '] ';
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)
$pageindex .= ' ... ';
// Show the last number in the list. (1 ... 6 7 [8] 9 10 ... >15<)
if ($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 $modSettings;
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($modSettings['number_format']) || preg_match('~^1([^\d]*)?234([^\d]*)(0*?)$~', $modSettings['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, $thousands_separator);
}
// Format a time to make it look purdy.
function timeformat($logTime, $show_today = true)
{
global $user_info, $txt, $db_prefix, $modSettings, $func;
// Offset the time.
$time = $logTime + ($user_info['time_offset'] + $modSettings['time_offset']) * 3600;
// We can't have a negative date (on Windows, at least.)
if ($time < 0)
$time = 0;
// Today and Yesterday?
if ($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)
$today_fmt = '%I:%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 $txt['smf10'] . timeformat($logTime, $today_fmt);
// Day-of-year is one less and same year, or it's the first of the year and that's the last of the year...
if ($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 $txt['smf10b'] . timeformat($logTime, $today_fmt);
}
$str = !is_bool($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, $func['ucwords'](strftime($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)
{
return strtr($string, array_flip(get_html_translation_table(HTML_SPECIALCHARS, ENT_QUOTES)) + array(''' => '\'', ' ' => ' '));
}
if (!function_exists('stripos'))
{
function stripos($haystack, $needle, $offset = 0)
{
return strpos(strtolower($haystack), strtolower($needle), $offset);
}
}
// Shorten a subject + internationalization concerns.
function shorten_subject($subject, $len)
{
global $func;
// It was already short enough!
if ($func['strlen']($subject) <= $len)
return $subject;
// Shorten it by the length it was too long, and strip off junk from the end.
return $func['substr']($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 $orders;
}
// For old stuff still using doUBBC()...
function doUBBC($message, $enableSmileys = true)
{
return parse_bbc($message, $enableSmileys);
}
// Parse bulletin board code in a string, as well as smileys optionally.
function parse_bbc($message, $smileys = true, $cache_id = '')
{
global $txt, $scripturl, $context, $modSettings, $user_info;
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'] : $modSettings['global_character_set']) === 'UTF-8';
// Sift out the bbc for a performance improvement.
if (empty($bbc_codes) || $message === false)
{
if (!empty($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 repalced 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, '
$1
' elsewise.
disabled_before: used in place of before when disabled. Defaults
to '
' if block_level, '' if not.
disabled_after: used in place of after when disabled. Defaults
to '
' 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.
*/
$codes = array(
array(
'tag' => 'abbr',
'type' => 'unparsed_equals',
'before' => '',
'after' => '',
'quoted' => 'optional',
'disabled_after' => ' ($1)',
),
array(
'tag' => 'acronym',
'type' => 'unparsed_equals',
'before' => '',
'after' => '',
'quoted' => 'optional',
'disabled_after' => ' ($1)',
),
array(
'tag' => 'anchor',
'type' => 'unparsed_equals',
'test' => '[#]?([A-Za-z][A-Za-z0-9_\-]*)\]',
'before' => '',
'after' => '',
),
array(
'tag' => 'b',
'before' => '',
'after' => '',
),
array(
'tag' => 'black',
'before' => '',
'after' => '',
),
array(
'tag' => 'blue',
'before' => '',
'after' => '',
),
array(
'tag' => 'br',
'type' => 'closed',
'content' => ' ',
),
array(
'tag' => 'code',
'type' => 'unparsed_content',
'content' => '
' . $txt['smf238'] . ':
' . ($context['browser']['is_gecko'] ? '
$1
' : '$1') . '
',
// !!! Maybe this can be simplified?
'validate' => isset($disabled['code']) ? null : create_function('&$tag, &$data, $disabled', '
global $context;
if (!isset($disabled[\'code\']))
{
$php_parts = preg_split(\'~(<\?php|\?>)~\', $data, -1, PREG_SPLIT_DELIM_CAPTURE);
for ($php_i = 0, $php_n = count($php_parts); $php_i < $php_n; $php_i++)
{
// Do PHP code coloring?
if ($php_parts[$php_i] != \'<?php\')
continue;
$php_string = \'\';
while ($php_i + 1 < count($php_parts) && $php_parts[$php_i] != \'?>\')
{
$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("
',
'require_parents' => array('tr'),
'trim' => 'outside',
'block_level' => true,
'disabled_before' => '',
'disabled_after' => '',
),
array(
'tag' => 'url',
'type' => 'unparsed_content',
'content' => '$1',
'validate' => create_function('&$tag, &$data, $disabled', '$data = strtr($data, array(\' \' => \'\'));'),
),
array(
'tag' => 'url',
'type' => 'unparsed_equals',
'before' => '',
'after' => '',
'disallow_children' => array('email', 'ftp', 'url', 'iurl'),
'disabled_after' => ' ($1)',
),
array(
'tag' => 'u',
'before' => '',
'after' => '',
),
array(
'tag' => 'white',
'before' => '',
'after' => '',
),
);
// This is mainly for the bbc manager, so it's easy to add tags above. Custom BBC should be added above this line.
if ($message === false)
return $codes;
// So the parser won't skip them.
$itemcodes = array(
'*' => '',
'@' => 'disc',
'+' => 'square',
'x' => 'square',
'#' => 'square',
'o' => 'circle',
'O' => 'circle',
'0' => 'circle',
);
if (!isset($disabled['li']) && !isset($disabled['list']))
{
foreach ($itemcodes as $c => $dummy)
$bbc_codes[$c] = array();
}
// Inside these tags autolink is not recommendable.
$no_autolink_tags = array(
'url',
'iurl',
'ftp',
'email',
);
// Shhhh!
if (!isset($disabled['color']))
{
$codes[] = array(
'tag' => 'chrissy',
'before' => '',
'after' => ' :-*',
);
$codes[] = array(
'tag' => 'kissy',
'before' => '',
'after' => ' :-*',
);
}
foreach ($codes as $c)
$bbc_codes[substr($c['tag'], 0, 1)][] = $c;
$codes = null;
}
// Shall we take the time to cache this?
if ($cache_id != '' && !empty($modSettings['cache_enable']) && (($modSettings['cache_enable'] >= 2 && strlen($message) > 1000) || strlen($message) > 2400))
{
// It's likely this will change if the message is modified.
$cache_key = 'parse:' . $cache_id . '-' . md5(md5($message) . '-' . $smileys . (empty($disabled) ? '' : implode(',', array_keys($disabled))) . serialize($context['browser']) . $txt['lang_locale'] . $user_info['time_offset'] . $user_info['time_format']);
if (($temp = cache_get_data($cache_key, 240)) != null)
return $temp;
$cache_t = microtime();
}
if ($smileys === 'print')
{
// [glow], [shadow], and [move] can't really be printed.
$disabled['glow'] = true;
$disabled['shadow'] = true;
$disabled['move'] = true;
// Colors can't well be displayed... supposed to be black and white.
$disabled['color'] = true;
$disabled['black'] = true;
$disabled['blue'] = true;
$disabled['white'] = true;
$disabled['red'] = true;
$disabled['green'] = true;
$disabled['me'] = true;
// Color coding doesn't make sense.
$disabled['php'] = true;
// Links are useless on paper... just show the link.
$disabled['ftp'] = true;
$disabled['url'] = true;
$disabled['iurl'] = true;
$disabled['email'] = true;
$disabled['flash'] = true;
// !!! Change maybe?
if (!isset($_GET['images']))
$disabled['img'] = true;
// !!! Interface/setting to add more?
}
$open_tags = array();
$message = strtr($message, array("\n" => ' '));
// The non-breaking-space looks a bit different each time.
$non_breaking_space = $context['utf8'] ? ($context['server']['complex_preg_chars'] ? '\x{C2A0}' : chr(0xC2) . chr(0xA0)) : '\xA0';
$pos = -1;
while ($pos !== false)
{
$last_pos = isset($last_pos) ? max($pos, $last_pos) : $pos;
$pos = strpos($message, '[', $pos + 1);
// Failsafe.
if ($pos === false || $last_pos > $pos)
$pos = strlen($message) + 1;
// Can't have a one letter smiley, URL, or email! (sorry.)
if ($last_pos < $pos - 1)
{
// We want to eat one less, and one more, character (for smileys.)
$last_pos = max($last_pos - 1, 0);
$data = substr($message, $last_pos, $pos - $last_pos + 1);
// Take care of some HTML!
if (!empty($modSettings['enablePostHTML']) && strpos($data, '<') !== false)
{
$data = preg_replace('~<a\s+href=(?:")?((?:http://|ftp://|https://|ftps://|mailto:).+?)(?:")?>~i', '[url=$1]', $data);
$data = preg_replace('~</a>~i', '[/url]', $data);
// should be empty.
$empty_tags = array('br', 'hr');
foreach ($empty_tags as $tag)
$data = str_replace(array('<' . $tag . '>', '<' . $tag . '/>', '<' . $tag . ' />'), '[' . $tag . ' /]', $data);
// b, u, i, s, pre... basic tags.
$closable_tags = array('b', 'u', 'i', 's', 'em', 'ins', 'del', 'pre', 'blockquote');
foreach ($closable_tags as $tag)
{
$diff = substr_count($data, '<' . $tag . '>') - substr_count($data, '</' . $tag . '>');
$data = strtr($data, array('<' . $tag . '>' => '<' . $tag . '>', '</' . $tag . '>' => ''));
if ($diff > 0)
$data .= str_repeat('', $diff);
}
// Do - with security... action= -> action-.
preg_match_all('~<img\s+src=(?:")?((?:http://|ftp://|https://|ftps://).+?)(?:")?(?:\s+alt=(?:")?(.*?)(?:")?)?(?:\s?/)?>~i', $data, $matches, PREG_PATTERN_ORDER);
if (!empty($matches[0]))
{
$replaces = array();
foreach ($matches[1] as $match => $imgtag)
{
// No alt?
if (!isset($matches[2][$match]))
$matches[2][$match] = '';
// Remove action= from the URL - no funny business, now.
if (preg_match('~action(=|%3d)(?!dlattach)~i', $imgtag) != 0)
$imgtag = preg_replace('~action(=|%3d)(?!dlattach)~i', 'action-', $imgtag);
// Check if the image is larger than allowed.
if (!empty($modSettings['max_image_width']) && !empty($modSettings['max_image_height']))
{
list ($width, $height) = url_image_size($imgtag);
if (!empty($modSettings['max_image_width']) && $width > $modSettings['max_image_width'])
{
$height = (int) (($modSettings['max_image_width'] * $height) / $width);
$width = $modSettings['max_image_width'];
}
if (!empty($modSettings['max_image_height']) && $height > $modSettings['max_image_height'])
{
$width = (int) (($modSettings['max_image_height'] * $width) / $height);
$height = $modSettings['max_image_height'];
}
// Set the new image tag.
$replaces[$matches[0][$match]] = '';
}
else
$replaces[$matches[0][$match]] = '';
}
$data = strtr($data, $replaces);
}
}
if (!empty($modSettings['autoLinkUrls']))
{
// Are we inside tags that should be auto linked?
$no_autolink_area = false;
if (!empty($open_tags))
{
foreach ($open_tags as $open_tag)
if (in_array($open_tag['tag'], $no_autolink_tags))
$no_autolink_area = true;
}
// Don't go backwards.
//!!! Don't think is the real solution....
$lastAutoPos = isset($lastAutoPos) ? $lastAutoPos : 0;
if ($pos < $lastAutoPos)
$no_autolink_area = true;
$lastAutoPos = $pos;
if (!$no_autolink_area)
{
// Parse any URLs.... have to get rid of the @ problems some things cause... stupid email addresses.
if (!isset($disabled['url']) && (strpos($data, '://') !== false || strpos($data, 'www.') !== false))
{
// Switch out quotes really quick because they can cause problems.
$data = strtr($data, array(''' => '\'', ' ' => $context['utf8'] ? "\xC2\xA0" : "\xA0", '"' => '>">', '"' => '<"<', '<' => '\.(;\'"]|^)((?:http|https|ftp|ftps)://[\w\-_%@:|]+(?:\.[\w\-_%]+)*(?::\d+)?(?:/[\w\-_\~%\.@,\?&;=#+:\'\\\\]*|[\(\{][\w\-_\~%\.@,\?&;=#(){}+:\'\\\\]*)*[/\w\-_\~%@\?;=#}\\\\])~i', '~(?<=[\s>(\'<]|^)(www(?:\.[\w\-_]+)+(?::\d+)?(?:/[\w\-_\~%\.@,\?&;=#+:\'\\\\]*|[\(\{][\w\-_\~%\.@,\?&;=#(){}+:\'\\\\]*)*[/\w\-_\~%@\?;=#}\\\\])~i'), array('[url]$1[/url]', '[url=http://$1]$1[/url]'), $data);
$data = strtr($data, array('\'' => ''', $context['utf8'] ? "\xC2\xA0" : "\xA0" => ' ', '>">' => '"', '<"<' => '"', ' '<'));
}
// Next, emails...
if (!isset($disabled['email']) && strpos($data, '@') !== false)
{
$data = preg_replace('~(?<=[\?\s' . $non_breaking_space . '\[\]()*\\\;>]|^)([\w\-\.]{1,80}@[\w\-]+\.[\w\-\.]+[\w\-])(?=[?,\s' . $non_breaking_space . '\[\]()*\\\]|$| | |>|<|"|'|\.(?:\.|;| |\s|$| ))~' . ($context['utf8'] ? 'u' : ''), '[email]$1[/email]', $data);
$data = preg_replace('~(?<= )([\w\-\.]{1,80}@[\w\-]+\.[\w\-\.]+[\w\-])(?=[?\.,;\s' . $non_breaking_space . '\[\]()*\\\]|$| | |>|<|"|')~' . ($context['utf8'] ? 'u' : ''), '[email]$1[/email]', $data);
}
}
}
$data = strtr($data, array("\t" => ' '));
if (!empty($modSettings['fixLongWords']) && $modSettings['fixLongWords'] > 5)
{
// This is SADLY and INCREDIBLY browser dependent.
if ($context['browser']['is_gecko'] || $context['browser']['is_konqueror'])
$breaker = '';
// Opera...
elseif ($context['browser']['is_opera'])
$breaker = '';
// Internet Explorer...
else
$breaker = '';
// PCRE will not be happy if we don't give it a short.
$modSettings['fixLongWords'] = (int) min(65535, $modSettings['fixLongWords']);
// The idea is, find words xx long, and then replace them with xx + space + more.
if (strlen($data) > $modSettings['fixLongWords'])
{
// This is done in a roundabout way because $breaker has "long words" :P.
$data = strtr($data, array($breaker => '< >', ' ' => $context['utf8'] ? "\xC2\xA0" : "\xA0"));
$data = preg_replace(
'~(?<=[>;:!? ' . $non_breaking_space . '\]()]|^)([\w\.]{' . $modSettings['fixLongWords'] . ',})~e' . ($context['utf8'] ? 'u' : ''),
"preg_replace('/(.{" . ($modSettings['fixLongWords'] - 1) . '})/' . ($context['utf8'] ? 'u' : '') . "', '\\\$1< >', '\$1')",
$data);
$data = strtr($data, array('< >' => $breaker, $context['utf8'] ? "\xC2\xA0" : "\xA0" => ' '));
}
}
// Do any smileys!
if ($smileys === true)
parsesmileys($data);
// If it wasn't changed, no copying or other boring stuff has to happen!
if ($data != substr($message, $last_pos, $pos - $last_pos + 1))
{
$message = substr($message, 0, $last_pos) . $data . substr($message, $pos + 1);
// Since we changed it, look again incase we added or removed a tag. But we don't want to skip any.
$old_pos = strlen($data) + $last_pos - 1;
$pos = strpos($message, '[', $last_pos);
$pos = $pos === false ? $old_pos : min($pos, $old_pos);
}
}
// Are we there yet? Are we there yet?
if ($pos >= strlen($message) - 1)
break;
$tags = strtolower(substr($message, $pos + 1, 1));
if ($tags == '/' && !empty($open_tags))
{
$pos2 = strpos($message, ']', $pos + 1);
if ($pos2 == $pos + 2)
continue;
$look_for = strtolower(substr($message, $pos + 2, $pos2 - $pos - 2));
$to_close = array();
$block_level = null;
do
{
$tag = array_pop($open_tags);
if (!$tag)
break;
if (!empty($tag['block_level']))
{
// Only find out if we need to.
if ($block_level === false)
{
array_push($open_tags, $tag);
break;
}
// The idea is, if we are LOOKING for a block level tag, we can close them on the way.
if (strlen($look_for) > 0 && isset($bbc_codes[$look_for{0}]))
{
foreach ($bbc_codes[$look_for{0}] as $temp)
if ($temp['tag'] == $look_for)
{
$block_level = !empty($temp['block_level']);
break;
}
}
if ($block_level !== true)
{
$block_level = false;
array_push($open_tags, $tag);
break;
}
}
$to_close[] = $tag;
}
while ($tag['tag'] != $look_for);
// Did we just eat through everything and not find it?
if ((empty($open_tags) && (empty($tag) || $tag['tag'] != $look_for)))
{
$open_tags = $to_close;
continue;
}
elseif (!empty($to_close) && $tag['tag'] != $look_for)
{
if ($block_level === null && isset($look_for{0}, $bbc_codes[$look_for{0}]))
{
foreach ($bbc_codes[$look_for{0}] as $temp)
if ($temp['tag'] == $look_for)
{
$block_level = !empty($temp['block_level']);
break;
}
}
// We're not looking for a block level tag (or maybe even a tag that exists...)
if (!$block_level)
{
foreach ($to_close as $tag)
array_push($open_tags, $tag);
continue;
}
}
foreach ($to_close as $tag)
{
$message = substr($message, 0, $pos) . $tag['after'] . substr($message, $pos2 + 1);
$pos += strlen($tag['after']);
$pos2 = $pos - 1;
// See the comment at the end of the big loop - just eating whitespace ;).
if (!empty($tag['block_level']) && substr($message, $pos, 6) == ' ')
$message = substr($message, 0, $pos) . substr($message, $pos + 6);
if (!empty($tag['trim']) && $tag['trim'] != 'inside' && preg_match('~( | |\s)*~', substr($message, $pos), $matches) != 0)
$message = substr($message, 0, $pos) . substr($message, $pos + strlen($matches[0]));
}
if (!empty($to_close))
{
$to_close = array();
$pos--;
}
continue;
}
// No tags for this character, so just keep going (fastest possible course.)
if (!isset($bbc_codes[$tags]))
continue;
$inside = empty($open_tags) ? null : $open_tags[count($open_tags) - 1];
$tag = null;
foreach ($bbc_codes[$tags] as $possible)
{
// Not a match?
if (strtolower(substr($message, $pos + 1, strlen($possible['tag']))) != $possible['tag'])
continue;
$next_c = substr($message, $pos + 1 + strlen($possible['tag']), 1);
// A test validation?
if (isset($possible['test']) && preg_match('~^' . $possible['test'] . '~', substr($message, $pos + 1 + strlen($possible['tag']) + 1)) == 0)
continue;
// Do we want parameters?
elseif (!empty($possible['parameters']))
{
if ($next_c != ' ')
continue;
}
elseif (isset($possible['type']))
{
// Do we need an equal sign?
if (in_array($possible['type'], array('unparsed_equals', 'unparsed_commas', 'unparsed_commas_content', 'unparsed_equals_content', 'parsed_equals')) && $next_c != '=')
continue;
// Maybe we just want a /...
if ($possible['type'] == 'closed' && $next_c != ']' && substr($message, $pos + 1 + strlen($possible['tag']), 2) != '/]' && substr($message, $pos + 1 + strlen($possible['tag']), 3) != ' /]')
continue;
// An immediate ]?
if ($possible['type'] == 'unparsed_content' && $next_c != ']')
continue;
}
// No type means 'parsed_content', which demands an immediate ] without parameters!
elseif ($next_c != ']')
continue;
// Check allowed tree?
if (isset($possible['require_parents']) && ($inside === null || !in_array($inside['tag'], $possible['require_parents'])))
continue;
elseif (isset($inside['require_children']) && !in_array($possible['tag'], $inside['require_children']))
continue;
// If this is in the list of disallowed child tags, don't parse it.
elseif (isset($inside['disallow_children']) && in_array($possible['tag'], $inside['disallow_children']))
continue;
$pos1 = $pos + 1 + strlen($possible['tag']) + 1;
// This is long, but it makes things much easier and cleaner.
if (!empty($possible['parameters']))
{
$preg = array();
foreach ($possible['parameters'] as $p => $info)
$preg[] = '(\s+' . $p . '=' . (empty($info['quoted']) ? '' : '"') . (isset($info['match']) ? $info['match'] : '(.+?)') . (empty($info['quoted']) ? '' : '"') . ')' . (empty($info['optional']) ? '' : '?');
// Okay, this may look ugly and it is, but it's not going to happen much and it is the best way of allowing any order of parameters but still parsing them right.
$match = false;
$orders = permute($preg);
foreach ($orders as $p)
if (preg_match('~^' . implode('', $p) . '\]~i', substr($message, $pos1 - 1), $matches) != 0)
{
$match = true;
break;
}
// Didn't match our parameter list, try the next possible.
if (!$match)
continue;
$params = array();
for ($i = 1, $n = count($matches); $i < $n; $i += 2)
{
$key = strtok(ltrim($matches[$i]), '=');
if (isset($possible['parameters'][$key]['value']))
$params['{' . $key . '}'] = strtr($possible['parameters'][$key]['value'], array('$1' => $matches[$i + 1]));
elseif (isset($possible['parameters'][$key]['validate']))
$params['{' . $key . '}'] = $possible['parameters'][$key]['validate']($matches[$i + 1]);
else
$params['{' . $key . '}'] = $matches[$i + 1];
// Just to make sure: replace any $ or { so they can't interpolate wrongly.
$params['{' . $key . '}'] = strtr($params['{' . $key . '}'], array('$' => '$', '{' => '{'));
}
foreach ($possible['parameters'] as $p => $info)
{
if (!isset($params['{' . $p . '}']))
$params['{' . $p . '}'] = '';
}
$tag = $possible;
// Put the parameters into the string.
if (isset($tag['before']))
$tag['before'] = strtr($tag['before'], $params);
if (isset($tag['after']))
$tag['after'] = strtr($tag['after'], $params);
if (isset($tag['content']))
$tag['content'] = strtr($tag['content'], $params);
$pos1 += strlen($matches[0]) - 1;
}
else
$tag = $possible;
break;
}
// Item codes are complicated buggers... they are implicit [li]s and can make [list]s!
if ($smileys !== false && $tag === null && isset($itemcodes[substr($message, $pos + 1, 1)]) && substr($message, $pos + 2, 1) == ']' && !isset($disabled['list']) && !isset($disabled['li']))
{
if (substr($message, $pos + 1, 1) == '0' && !in_array(substr($message, $pos - 1, 1), array(';', ' ', "\t", '>')))
continue;
$tag = $itemcodes[substr($message, $pos + 1, 1)];
// First let's set up the tree: it needs to be in a list, or after an li.
if ($inside === null || ($inside['tag'] != 'list' && $inside['tag'] != 'li'))
{
$open_tags[] = array(
'tag' => 'list',
'after' => '',
'block_level' => true,
'require_children' => array('li'),
'disallow_children' => isset($inside['disallow_children']) ? $inside['disallow_children'] : null,
);
$code = '
';
}
// We're in a list item already: another itemcode? Close it first.
elseif ($inside['tag'] == 'li')
{
array_pop($open_tags);
$code = '';
}
else
$code = '';
// Now we open a new tag.
$open_tags[] = array(
'tag' => 'li',
'after' => '',
'trim' => 'outside',
'block_level' => true,
'disallow_children' => isset($inside['disallow_children']) ? $inside['disallow_children'] : null,
);
// First, open the tag...
$code .= '';
$message = substr($message, 0, $pos) . $code . substr($message, $pos + 3);
$pos += strlen($code) - 1;
// Next, find the next break (if any.) If there's more itemcode after it, keep it going - otherwise close!
$pos2 = strpos($message, ' ', $pos);
$pos3 = strpos($message, '[/', $pos);
if ($pos2 !== false && ($pos2 <= $pos3 || $pos3 === false))
{
preg_match('~^( | |\s|\[)+~', substr($message, $pos2 + 6), $matches);
$message = substr($message, 0, $pos2) . (!empty($matches[0]) && substr($matches[0], -1) == '[' ? '[/li]' : '[/li][/list]') . substr($message, $pos2);
$open_tags[count($open_tags) - 2]['after'] = '
';
}
// Tell the [list] that it needs to close specially.
else
{
// Move the li over, because we're not sure what we'll hit.
$open_tags[count($open_tags) - 1]['after'] = '';
$open_tags[count($open_tags) - 2]['after'] = '';
}
continue;
}
// Implicitly close lists and tables if something other than what's required is in them. This is needed for itemcode.
if ($tag === null && $inside !== null && !empty($inside['require_children']))
{
array_pop($open_tags);
$message = substr($message, 0, $pos) . $inside['after'] . substr($message, $pos);
$pos += strlen($inside['after']) - 1;
}
// No tag? Keep looking, then. Silly people using brackets without actual tags.
if ($tag === null)
continue;
// Propagate the list to the child (so wrapping the disallowed tag won't work either.)
if (isset($inside['disallow_children']))
$tag['disallow_children'] = isset($tag['disallow_children']) ? array_unique(array_merge($tag['disallow_children'], $inside['disallow_children'])) : $inside['disallow_children'];
// Is this tag disabled?
if (isset($disabled[$tag['tag']]))
{
if (!isset($tag['disabled_before']) && !isset($tag['disabled_after']) && !isset($tag['disabled_content']))
{
$tag['before'] = !empty($tag['block_level']) ? '