<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
exit;
}
/**
* Header for acp pages
*/
function adm_page_header($page_title)
{
global $config, $user, $template;
global $phpbb_root_path, $phpbb_admin_path, $phpEx, $SID, $_SID;
global $phpbb_dispatcher, $phpbb_container;
if (defined('HEADER_INC'))
{
return;
}
define('HEADER_INC', true);
// A listener can set this variable to `true` when it overrides this function
$adm_page_header_override = false;
/**
* Execute code and/or overwrite adm_page_header()
*
* @event core.adm_page_header
* @var string page_title Page title
* @var bool adm_page_header_override Shall we return instead of
* running the rest of adm_page_header()
* @since 3.1.0-a1
*/
$vars = array('page_title', 'adm_page_header_override');
extract($phpbb_dispatcher->trigger_event('core.adm_page_header', compact($vars)));
if ($adm_page_header_override)
{
return;
}
$user->update_session_infos();
// gzip_compression
if ($config['gzip_compress'])
{
if (@extension_loaded('zlib') && !headers_sent())
{
ob_start('ob_gzhandler');
}
}
$template->assign_vars(array(
'PAGE_TITLE' => $page_title,
'USERNAME' => $user->data['username'],
'SID' => $SID,
'_SID' => $_SID,
'SESSION_ID' => $user->session_id,
'ROOT_PATH' => $phpbb_root_path,
'ADMIN_ROOT_PATH' => $phpbb_admin_path,
'U_LOGOUT' => append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=logout'),
'U_ADM_LOGOUT' => append_sid("{$phpbb_admin_path}index.$phpEx", 'action=admlogout'),
'U_ADM_INDEX' => append_sid("{$phpbb_admin_path}index.$phpEx"),
'U_INDEX' => append_sid("{$phpbb_root_path}index.$phpEx"),
'T_IMAGES_PATH' => "{$phpbb_root_path}images/",
'T_SMILIES_PATH' => "{$phpbb_root_path}{$config['smilies_path']}/",
'T_AVATAR_PATH' => "{$phpbb_root_path}{$config['avatar_path']}/",
'T_AVATAR_GALLERY_PATH' => "{$phpbb_root_path}{$config['avatar_gallery_path']}/",
'T_ICONS_PATH' => "{$phpbb_root_path}{$config['icons_path']}/",
'T_RANKS_PATH' => "{$phpbb_root_path}{$config['ranks_path']}/",
'T_UPLOAD_PATH' => "{$phpbb_root_path}{$config['upload_path']}/",
'T_FONT_AWESOME_LINK' => !empty($config['allow_cdn']) && !empty($config['load_font_awesome_url']) ? $config['load_font_awesome_url'] : "{$phpbb_root_path}assets/css/font-awesome.min.css?assets_version=" . $config['assets_version'],
'T_ASSETS_VERSION' => $config['assets_version'],
'ICON_MOVE_UP' => '<i class="icon acp-icon acp-icon-move-up fa-arrow-circle-up fa-fw" title="' . $user->lang('MOVE_UP') . '"></i>',
'ICON_MOVE_UP_DISABLED' => '<i class="icon acp-icon acp-icon-disabled fa-arrow-circle-up fa-fw" title="' . $user->lang('MOVE_UP') . '"></i>',
'ICON_MOVE_DOWN' => '<i class="icon acp-icon acp-icon-move-down fa-arrow-circle-down fa-fw" title="' . $user->lang('MOVE_DOWN') . '"></i>',
'ICON_MOVE_DOWN_DISABLED' => '<i class="icon acp-icon acp-icon-disabled fa-arrow-circle-down fa-fw" title="' . $user->lang('MOVE_DOWN') . '"></i>',
'ICON_EDIT' => '<i class="icon acp-icon acp-icon-settings fa-cog fa-fw" title="' . $user->lang('EDIT') . '"></i>',
'ICON_EDIT_DISABLED' => '<i class="icon acp-icon acp-icon-disabled fa-cog fa-fw" title="' . $user->lang('EDIT') . '"></i>',
'ICON_DELETE' => '<i class="icon acp-icon acp-icon-delete fa-times-circle fa-fw" title="' . $user->lang('DELETE') . '"></i>',
'ICON_DELETE_DISABLED' => '<i class="icon acp-icon acp-icon-disabled fa-times-circle fa-fw" title="' . $user->lang('DELETE') . '"></i>',
'ICON_SYNC' => '<i class="icon acp-icon acp-icon-resync fa-refresh fa-fw" title="' . $user->lang('RESYNC') . '"></i>',
'ICON_SYNC_DISABLED' => '<i class="icon acp-icon acp-icon-disabled fa-refresh fa-fw" title="' . $user->lang('RESYNC') . '"></i>',
'S_USER_LANG' => $user->lang['USER_LANG'],
'S_CONTENT_DIRECTION' => $user->lang['DIRECTION'],
'S_CONTENT_ENCODING' => 'UTF-8',
'S_CONTENT_FLOW_BEGIN' => ($user->lang['DIRECTION'] == 'ltr') ? 'left' : 'right',
'S_CONTENT_FLOW_END' => ($user->lang['DIRECTION'] == 'ltr') ? 'right' : 'left',
'CONTAINER_EXCEPTION' => $phpbb_container->hasParameter('container_exception') ? $phpbb_container->getParameter('container_exception') : false,
));
// An array of http headers that phpBB will set. The following event may override these.
$http_headers = array(
// application/xhtml+xml not used because of IE
'Content-type' => 'text/html; charset=UTF-8',
'Cache-Control' => 'private, no-cache="set-cookie"',
'Expires' => gmdate('D, d M Y H:i:s', time()) . ' GMT',
'Referrer-Policy' => 'strict-origin-when-cross-origin',
);
/**
* Execute code and/or overwrite _common_ template variables after they have been assigned.
*
* @event core.adm_page_header_after
* @var string page_title Page title
* @var array http_headers HTTP headers that should be set by phpbb
*
* @since 3.1.0-RC3
*/
$vars = array('page_title', 'http_headers');
extract($phpbb_dispatcher->trigger_event('core.adm_page_header_after', compact($vars)));
foreach ($http_headers as $hname => $hval)
{
header((string) $hname . ': ' . (string) $hval);
}
return;
}
/**
* Page footer for acp pages
*/
function adm_page_footer($copyright_html = true)
{
global $db, $config, $template, $user, $auth;
global $phpbb_root_path;
global $request, $phpbb_dispatcher;
// A listener can set this variable to `true` when it overrides this function
$adm_page_footer_override = false;
/**
* Execute code and/or overwrite adm_page_footer()
*
* @event core.adm_page_footer
* @var bool copyright_html Shall we display the copyright?
* @var bool adm_page_footer_override Shall we return instead of
* running the rest of adm_page_footer()
* @since 3.1.0-a1
*/
$vars = array('copyright_html', 'adm_page_footer_override');
extract($phpbb_dispatcher->trigger_event('core.adm_page_footer', compact($vars)));
if ($adm_page_footer_override)
{
return;
}
phpbb_check_and_display_sql_report($request, $auth, $db);
$template->assign_vars(array(
'DEBUG_OUTPUT' => phpbb_generate_debug_output($db, $config, $auth, $user, $phpbb_dispatcher),
'TRANSLATION_INFO' => (!empty($user->lang['TRANSLATION_INFO'])) ? $user->lang['TRANSLATION_INFO'] : '',
'S_COPYRIGHT_HTML' => $copyright_html,
'CREDIT_LINE' => $user->lang('POWERED_BY', '<a href="https://www.phpbb.com/">phpBB</a>® Forum Software © phpBB Limited'),
'T_JQUERY_LINK' => !empty($config['allow_cdn']) && !empty($config['load_jquery_url']) ? $config['load_jquery_url'] : "{$phpbb_root_path}assets/javascript/jquery-3.6.0.min.js",
'S_ALLOW_CDN' => !empty($config['allow_cdn']),
'VERSION' => $config['version'])
);
$template->display('body');
garbage_collection();
exit_handler();
}
/**
* Generate back link for acp pages
*/
function adm_back_link($u_action)
{
global $user;
return '<br /><br /><a href="' . $u_action . '">« ' . $user->lang['BACK_TO_PREV'] . '</a>';
}
/**
* Build select field options in acp pages
*/
function build_select($option_ary, $option_default = false)
{
global $user;
$html = '';
foreach ($option_ary as $value => $title)
{
$selected = ($option_default !== false && $value == $option_default) ? ' selected="selected"' : '';
$html .= '<option value="' . $value . '"' . $selected . '>' . $user->lang[$title] . '</option>';
}
return $html;
}
/**
* Build radio fields in acp pages
*/
function h_radio($name, $input_ary, $input_default = false, $id = false, $key = false, $separator = '')
{
global $user;
$html = '';
$id_assigned = false;
foreach ($input_ary as $value => $title)
{
$selected = ($input_default !== false && $value == $input_default) ? ' checked="checked"' : '';
$html .= '<label><input type="radio" name="' . $name . '"' . (($id && !$id_assigned) ? ' id="' . $id . '"' : '') . ' value="' . $value . '"' . $selected . (($key) ? ' accesskey="' . $key . '"' : '') . ' class="radio" /> ' . $user->lang[$title] . '</label>' . $separator;
$id_assigned = true;
}
return $html;
}
/**
* Build configuration template for acp configuration pages
*/
function build_cfg_template($tpl_type, $key, &$new_ary, $config_key, $vars)
{
global $user, $module, $phpbb_dispatcher;
$tpl = '';
$name = 'config[' . $config_key . ']';
// Make sure there is no notice printed out for non-existent config options (we simply set them)
if (!isset($new_ary[$config_key]))
{
$new_ary[$config_key] = '';
}
switch ($tpl_type[0])
{
case 'password':
if ($new_ary[$config_key] !== '')
{
// replace passwords with asterixes
$new_ary[$config_key] = '********';
}
case 'text':
case 'url':
case 'email':
case 'tel':
case 'search':
// maxlength and size are only valid for these types and will be
// ignored for other input types.
$size = (int) $tpl_type[1];
$maxlength = (int) $tpl_type[2];
$tpl = '<input id="' . $key . '" type="' . $tpl_type[0] . '"' . (($size) ? ' size="' . $size . '"' : '') . ' maxlength="' . (($maxlength) ? $maxlength : 255) . '" name="' . $name . '" value="' . $new_ary[$config_key] . '"' . (($tpl_type[0] === 'password') ? ' autocomplete="off"' : '') . ' />';
break;
case 'color':
case 'datetime':
case 'datetime-local':
case 'month':
case 'week':
$tpl = '<input id="' . $key . '" type="' . $tpl_type[0] . '" name="' . $name . '" value="' . $new_ary[$config_key] . '" />';
break;
case 'date':
case 'time':
case 'number':
case 'range':
$min = isset($tpl_type[1]) ? (int) $tpl_type[1] : false;
$max = isset($tpl_type[2]) ? (int) $tpl_type[2] : false;
$tpl = '<input id="' . $key . '" type="' . $tpl_type[0] . '"' . (( $min !== false ) ? ' min="' . $min . '"' : '') . (( $max !== false ) ? ' max="' . $max . '"' : '') . ' name="' . $name . '" value="' . $new_ary[$config_key] . '" />';
break;
case 'dimension':
$min = isset($tpl_type[1]) ? (int) $tpl_type[1] : false;
$max = isset($tpl_type[2]) ? (int) $tpl_type[2] : false;
$tpl = '<input id="' . $key . '" type="number"' . (( $min !== false ) ? ' min="' . $min . '"' : '') . (( $max !== false ) ? ' max="' . $max . '"' : '') . ' name="config[' . $config_key . '_width]" value="' . $new_ary[$config_key . '_width'] . '" /> x <input type="number"' . (( $min !== '' ) ? ' min="' . $min . '"' : '') . (( $max != '' ) ? ' max="' . $max . '"' : '') . ' name="config[' . $config_key . '_height]" value="' . $new_ary[$config_key . '_height'] . '" />';
break;
case 'textarea':
$rows = (int) $tpl_type[1];
$cols = (int) $tpl_type[2];
$tpl = '<textarea id="' . $key . '" name="' . $name . '" rows="' . $rows . '" cols="' . $cols . '">' . $new_ary[$config_key] . '</textarea>';
break;
case 'radio':
$key_yes = ($new_ary[$config_key]) ? ' checked="checked"' : '';
$key_no = (!$new_ary[$config_key]) ? ' checked="checked"' : '';
$tpl_type_cond = explode('_', $tpl_type[1]);
$type_no = ($tpl_type_cond[0] == 'disabled' || $tpl_type_cond[0] == 'enabled') ? false : true;
$tpl_no = '<label><input type="radio" name="' . $name . '" value="0"' . $key_no . ' class="radio" /> ' . (($type_no) ? $user->lang['NO'] : $user->lang['DISABLED']) . '</label>';
$tpl_yes = '<label><input type="radio" id="' . $key . '" name="' . $name . '" value="1"' . $key_yes . ' class="radio" /> ' . (($type_no) ? $user->lang['YES'] : $user->lang['ENABLED']) . '</label>';
$tpl = ($tpl_type_cond[0] == 'yes' || $tpl_type_cond[0] == 'enabled') ? $tpl_yes . $tpl_no : $tpl_no . $tpl_yes;
break;
case 'select':
case 'custom':
if (isset($vars['method']))
{
$call = array($module->module, $vars['method']);
}
else if (isset($vars['function']))
{
$call = $vars['function'];
}
else
{
break;
}
if (isset($vars['params']))
{
$args = array();
foreach ($vars['params'] as $value)
{
switch ($value)
{
case '{CONFIG_VALUE}':
$value = $new_ary[$config_key];
break;
case '{KEY}':
$value = $key;
break;
}
$args[] = $value;
}
}
else
{
$args = array($new_ary[$config_key], $key);
}
$return = call_user_func_array($call, $args);
if ($tpl_type[0] == 'select')
{
$size = (isset($tpl_type[1])) ? (int) $tpl_type[1] : 1;
$data_toggle = (!empty($tpl_type[2])) ? ' data-togglable-settings="true"' : '';
$tpl = '<select id="' . $key . '" name="' . $name . '"' . (($size > 1) ? ' size="' . $size . '"' : '') . $data_toggle . '>' . $return . '</select>';
}
else
{
$tpl = $return;
}
break;
default:
break;
}
if (isset($vars['append']))
{
$tpl .= $vars['append'];
}
$new = $new_ary;
/**
* Overwrite the html code we display for the config value
*
* @event core.build_config_template
* @var array tpl_type Config type array:
* 0 => data type
* 1 [optional] => string: size, int: minimum
* 2 [optional] => string: max. length, int: maximum
* @var string key Should be used for the id attribute in html
* @var array new Array with the config values we display
* @var string name Should be used for the name attribute
* @var array vars Array with the options for the config
* @var string tpl The resulting html code we display
* @since 3.1.0-a1
*/
$vars = array('tpl_type', 'key', 'new', 'name', 'vars', 'tpl');
extract($phpbb_dispatcher->trigger_event('core.build_config_template', compact($vars)));
$new_ary = $new;
unset($new);
return $tpl;
}
/**
* Going through a config array and validate values, writing errors to $error. The validation method accepts parameters separated by ':' for string and int.
* The first parameter defines the type to be used, the second the lower bound and the third the upper bound. Only the type is required.
*/
function validate_config_vars($config_vars, &$cfg_array, &$error)
{
global $phpbb_root_path, $user, $phpbb_dispatcher, $phpbb_filesystem, $language;
$type = 0;
$min = 1;
$max = 2;
foreach ($config_vars as $config_name => $config_definition)
{
if (!isset($cfg_array[$config_name]) || strpos($config_name, 'legend') !== false)
{
continue;
}
if (!isset($config_definition['validate']))
{
continue;
}
$validator = explode(':', $config_definition['validate']);
// Validate a bit. ;) (0 = type, 1 = min, 2= max)
switch ($validator[$type])
{
case 'url':
case 'csv':
if ($validator[$type] == 'url')
{
$cfg_array[$config_name] = trim($cfg_array[$config_name]);
if (!empty($cfg_array[$config_name]) && !preg_match('#^' . get_preg_expression('url') . '$#iu', $cfg_array[$config_name]))
{
$error[] = $language->lang('URL_INVALID', $language->lang($config_definition['lang']));
}
}
else if ($validator[$type] == 'csv')
{
// Validate comma separated values
$unfiltered_array = explode(',', $cfg_array[$config_name]);
$filtered_array = array_filter($unfiltered_array);
if (!empty($filtered_array) && count($unfiltered_array) !== count($filtered_array))
{
$error[] = $language->lang('CSV_INVALID', $language->lang($config_definition['lang']));
}
}
// no break here
case 'string':
$length = utf8_strlen($cfg_array[$config_name]);
// the column is a VARCHAR
$validator[$max] = (isset($validator[$max])) ? min(255, $validator[$max]) : 255;
if (isset($validator[$min]) && $length < $validator[$min])
{
$error[] = sprintf($user->lang['SETTING_TOO_SHORT'], $user->lang[$config_definition['lang']], $validator[$min]);
}
else if (isset($validator[$max]) && $length > $validator[2])
{
$error[] = sprintf($user->lang['SETTING_TOO_LONG'], $user->lang[$config_definition['lang']], $validator[$max]);
}
break;
case 'bool':
$cfg_array[$config_name] = ($cfg_array[$config_name]) ? 1 : 0;
break;
case 'int':
$cfg_array[$config_name] = (int) $cfg_array[$config_name];
if (isset($validator[$min]) && $cfg_array[$config_name] < $validator[$min])
{
$error[] = sprintf($user->lang['SETTING_TOO_LOW'], $user->lang[$config_definition['lang']], $validator[$min]);
}
else if (isset($validator[$max]) && $cfg_array[$config_name] > $validator[$max])
{
$error[] = sprintf($user->lang['SETTING_TOO_BIG'], $user->lang[$config_definition['lang']], $validator[$max]);
}
if (strpos($config_name, '_max') !== false)
{
// Min/max pairs of settings should ensure that min <= max
// Replace _max with _min to find the name of the minimum
// corresponding configuration variable
$min_name = str_replace('_max', '_min', $config_name);
if (isset($cfg_array[$min_name]) && is_numeric($cfg_array[$min_name]) && $cfg_array[$config_name] < $cfg_array[$min_name])
{
// A minimum value exists and the maximum value is less than it
$error[] = sprintf($user->lang['SETTING_TOO_LOW'], $user->lang[$config_definition['lang']], (int) $cfg_array[$min_name]);
}
}
break;
case 'email':
if (!preg_match('/^' . get_preg_expression('email') . '$/i', $cfg_array[$config_name]))
{
$error[] = $user->lang['EMAIL_INVALID_EMAIL'];
}
break;
// Absolute path
case 'script_path':
if (!$cfg_array[$config_name])
{
break;
}
$destination = str_replace('\\', '/', $cfg_array[$config_name]);
if ($destination !== '/')
{
// Adjust destination path (no trailing slash)
if (substr($destination, -1, 1) == '/')
{
$destination = substr($destination, 0, -1);
}
$destination = str_replace(array('../', './'), '', $destination);
if ($destination[0] != '/')
{
$destination = '/' . $destination;
}
}
$cfg_array[$config_name] = trim($destination);
break;
// Absolute path
case 'lang':
if (!$cfg_array[$config_name])
{
break;
}
$cfg_array[$config_name] = basename($cfg_array[$config_name]);
if (!file_exists($phpbb_root_path . 'language/' . $cfg_array[$config_name] . '/'))
{
$error[] = $user->lang['WRONG_DATA_LANG'];
}
break;
// Relative path (appended $phpbb_root_path)
case 'rpath':
case 'rwpath':
if (!$cfg_array[$config_name])
{
break;
}
$destination = $cfg_array[$config_name];
// Adjust destination path (no trailing slash)
if (substr($destination, -1, 1) == '/' || substr($destination, -1, 1) == '\\')
{
$destination = substr($destination, 0, -1);
}
$destination = str_replace(array('../', '..\\', './', '.\\'), '', $destination);
if ($destination && ($destination[0] == '/' || $destination[0] == "\\"))
{
$destination = '';
}
$cfg_array[$config_name] = trim($destination);
// Path being relative (still prefixed by phpbb_root_path), but with the ability to escape the root dir...
case 'path':
case 'wpath':
if (!$cfg_array[$config_name])
{
break;
}
$cfg_array[$config_name] = trim($cfg_array[$config_name]);
// Make sure no NUL byte is present...
if (strpos($cfg_array[$config_name], "\0") !== false || strpos($cfg_array[$config_name], '%00') !== false)
{
$cfg_array[$config_name] = '';
break;
}
$path = $phpbb_root_path . $cfg_array[$config_name];
if (!file_exists($path))
{
$error[] = sprintf($user->lang['DIRECTORY_DOES_NOT_EXIST'], $cfg_array[$config_name]);
}
if (file_exists($path) && !is_dir($path))
{
$error[] = sprintf($user->lang['DIRECTORY_NOT_DIR'], $cfg_array[$config_name]);
}
// Check if the path is writable
if ($config_definition['validate'] == 'wpath' || $config_definition['validate'] == 'rwpath')
{
if (file_exists($path) && !$phpbb_filesystem->is_writable($path))
{
$error[] = sprintf($user->lang['DIRECTORY_NOT_WRITABLE'], $cfg_array[$config_name]);
}
}
break;
default:
/**
* Validate a config value
*
* @event core.validate_config_variable
* @var array cfg_array Array with config values
* @var string config_name Name of the config we validate
* @var array config_definition Array with the options for
* this config
* @var array error Array of errors, the errors should
* be strings only, language keys are
* not replaced afterwards
* @since 3.1.0-a1
*/
$vars = array('cfg_array', 'config_name', 'config_definition', 'error');
extract($phpbb_dispatcher->trigger_event('core.validate_config_variable', compact($vars)));
break;
}
}
return;
}
/**
* Checks whatever or not a variable is OK for use in the Database
* param mixed $value_ary An array of the form array(array('lang' => ..., 'value' => ..., 'column_type' =>))'
* param mixed $error The error array
*/
function validate_range($value_ary, &$error)
{
global $user;
$column_types = array(
'BOOL' => array('php_type' => 'int', 'min' => 0, 'max' => 1),
'USINT' => array('php_type' => 'int', 'min' => 0, 'max' => 65535),
'UINT' => array('php_type' => 'int', 'min' => 0, 'max' => (int) 0x7fffffff),
// Do not use (int) 0x80000000 - it evaluates to different
// values on 32-bit and 64-bit systems.
// Apparently -2147483648 is a float on 32-bit systems,
// despite fitting in an int, thus explicit cast is needed.
'INT' => array('php_type' => 'int', 'min' => (int) -2147483648, 'max' => (int) 0x7fffffff),
'TINT' => array('php_type' => 'int', 'min' => -128, 'max' => 127),
'VCHAR' => array('php_type' => 'string', 'min' => 0, 'max' => 255),
);
foreach ($value_ary as $value)
{
$column = explode(':', $value['column_type']);
if (!isset($column_types[$column[0]]))
{
continue;
}
else
{
$type = $column_types[$column[0]];
}
switch ($type['php_type'])
{
case 'string' :
$max = (isset($column[1])) ? min($column[1],$type['max']) : $type['max'];
if (utf8_strlen($value['value']) > $max)
{
$error[] = sprintf($user->lang['SETTING_TOO_LONG'], $user->lang[$value['lang']], $max);
}
break;
case 'int':
$min = (isset($column[1])) ? max($column[1],$type['min']) : $type['min'];
$max = (isset($column[2])) ? min($column[2],$type['max']) : $type['max'];
if ($value['value'] < $min)
{
$error[] = sprintf($user->lang['SETTING_TOO_LOW'], $user->lang[$value['lang']], $min);
}
else if ($value['value'] > $max)
{
$error[] = sprintf($user->lang['SETTING_TOO_BIG'], $user->lang[$value['lang']], $max);
}
break;
}
}
}
/**
* Inserts new config display_vars into an exisiting display_vars array
* at the given position.
*
* @param array $display_vars An array of existing config display vars
* @param array $add_config_vars An array of new config display vars
* @param array $where Where to place the new config vars,
* before or after an exisiting config, as an array
* of the form: array('after' => 'config_name') or
* array('before' => 'config_name').
* @return array The array of config display vars
*/
function phpbb_insert_config_array($display_vars, $add_config_vars, $where)
{
if (is_array($where) && array_key_exists(current($where), $display_vars))
{
$position = array_search(current($where), array_keys($display_vars)) + ((key($where) == 'before') ? 0 : 1);
$display_vars = array_merge(
array_slice($display_vars, 0, $position),
$add_config_vars,
array_slice($display_vars, $position)
);
}
return $display_vars;
}