globals.php

<?php

// Checks if the server's PHP version is compatible with OpenEMR:
require_once(dirname(__FILE__) . "/../common/compatibility/Checker.php");

use OpenEMR\Checker;
use Dotenv\Dotenv;

$response = Checker::checkPhpVersion();
if ($response !== true) {
    die($response);
}

// Default values for optional variables that are allowed to be set by callers.

// Unless specified explicitly, apply Auth functions
if (!isset($ignoreAuth)) {
    $ignoreAuth = false;
}
// Unless specified explicitly, caller is not offsite_portal and Auth is required
if (!isset($ignoreAuth_offsite_portal)) {
    $ignoreAuth_offsite_portal = false;
}
// Same for onsite
if (!isset($ignoreAuth_onsite_portal_two)) {
    $ignoreAuth_onsite_portal_two = false;
}

// Is this windows or non-windows? Create a boolean definition.
if (!defined('IS_WINDOWS')) {
    define('IS_WINDOWS', (stripos(PHP_OS, 'WIN') === 0));
}

// Some important php.ini overrides. Defaults for these values are often
// too small.  You might choose to adjust them further.
//
ini_set('session.gc_maxlifetime', '14400');

// The webserver_root and web_root are now automatically collected.
// If not working, can set manually below.
// Auto collect the full absolute directory path for openemr.
$webserver_root = dirname(dirname(__FILE__));
if (IS_WINDOWS) {
 //convert windows path separators
    $webserver_root = str_replace("\\", "/", $webserver_root);
}
// Collect the apache server document root (and convert to windows slashes, if needed)
$server_document_root = realpath($_SERVER['DOCUMENT_ROOT']);
if (IS_WINDOWS) {
 //convert windows path separators
    $server_document_root = str_replace("\\", "/", $server_document_root);
}
// Auto collect the relative html path, i.e. what you would type into the web
// browser after the server address to get to OpenEMR.
// This removes the leading portion of $webserver_root that it has in common with the web server's document
// root and assigns the result to $web_root. In addition to the common case where $webserver_root is
// /var/www/openemr and document root is /var/www, this also handles the case where document root is
// /var/www/html and there is an Apache "Alias" command that directs /openemr to /var/www/openemr.
$web_root = substr($webserver_root, strspn($webserver_root ^ $server_document_root, "\0"));
// Ensure web_root starts with a path separator
if (preg_match("/^[^\/]/", $web_root)) {
    $web_root = "/".$web_root;
}
// The webserver_root and web_root are now automatically collected in
//  real time per above code. If above is not working, can uncomment and
//  set manually here:
//   $webserver_root = "/var/www/openemr";
//   $web_root =  "/openemr";
//

// This is the directory that contains site-specific data.  Change this
// only if you have some reason to.
$GLOBALS['OE_SITES_BASE'] = "$webserver_root/sites";

// The session name names a cookie stored in the browser.
// Now that restore_session() is implemented in javaScript, session IDs are
// effectively saved in the top level browser window and there is no longer
// any need to change the session name for different OpenEMR instances.
// On 4/8/17, added cookie_path to improve security when using different
// OpenEMR instances on same server to prevent session conflicts; also
// modified interface/login/login.php and library/restoreSession.php to be
// consistent with this.
ini_set('session.cookie_path', $web_root ? $web_root : '/');
session_name("OpenEMR");

session_start();

// Set the site ID if required.  This must be done before any database
// access is attempted.
if (empty($_SESSION['site_id']) || !empty($_GET['site'])) {
    if (!empty($_GET['site'])) {
        $tmp = $_GET['site'];
    } else {
        if (empty($ignoreAuth)) {
            die("Site ID is missing from session data!");
        }
        $tmp = $_SERVER['HTTP_HOST'];
        if (!is_dir($GLOBALS['OE_SITES_BASE'] . "/$tmp")) {
            $tmp = "default";
        }
    }
    if (empty($tmp) || preg_match('/[^A-Za-z0-9\\-.]/', $tmp)) {
        die("Site ID '". htmlspecialchars($tmp, ENT_NOQUOTES) . "' contains invalid characters.");
    }
    if (isset($_SESSION['site_id']) && ($_SESSION['site_id'] != $tmp)) {
      // This is to prevent using session to penetrate other OpenEMR instances within same multisite module
        session_unset(); // clear session, clean logout
        if (isset($landingpage) && !empty($landingpage)) {
          // OpenEMR Patient Portal use
            header('Location: index.php?site='.$tmp);
        } else {
          // Main OpenEMR use
            header('Location: ../login/login.php?site='.$tmp); // Assuming in the interface/main directory
        }
        exit;
    }
    if (!isset($_SESSION['site_id']) || $_SESSION['site_id'] != $tmp) {
        $_SESSION['site_id'] = $tmp;
      //error_log("Session site ID has been set to '$tmp'"); // debugging
    }
}

// Set the site-specific directory path.
$GLOBALS['OE_SITE_DIR'] = $GLOBALS['OE_SITES_BASE'] . "/" . $_SESSION['site_id'];

// Set a site-specific uri root path.
$GLOBALS['OE_SITE_WEBROOT'] = $web_root . "/sites/" . $_SESSION['site_id'];

require_once($GLOBALS['OE_SITE_DIR'] . "/config.php");

// Collecting the utf8 disable flag from the sqlconf.php file in order
// to set the correct html encoding. utf8 vs iso-8859-1. If flag is set
// then set to iso-8859-1.
require_once(dirname(__FILE__) . "/../library/sqlconf.php");
if (!$disable_utf8_flag) {
    ini_set('default_charset', 'utf-8');
    $HTML_CHARSET = "UTF-8";
    mb_internal_encoding('UTF-8');
} else {
    ini_set('default_charset', 'iso-8859-1');
    $HTML_CHARSET = "ISO-8859-1";
    mb_internal_encoding('ISO-8859-1');
}

// Root directory, relative to the webserver root:
$GLOBALS['rootdir'] = "$web_root/interface";
$rootdir = $GLOBALS['rootdir'];
// Absolute path to the source code include and headers file directory (Full path):
$GLOBALS['srcdir'] = "$webserver_root/library";
// Absolute path to the location of documentroot directory for use with include statements:
$GLOBALS['fileroot'] = "$webserver_root";
// Absolute path to the location of interface directory for use with include statements:
$include_root = "$webserver_root/interface";
// Absolute path to the location of documentroot directory for use with include statements:
$GLOBALS['webroot'] = $web_root;

// Static assets directory, relative to the webserver root.
// (it is very likely that this path will be changed in the future))
$GLOBALS['assets_static_relative'] = "$web_root/public/assets";

// Relative images directory, relative to the webserver root.
$GLOBALS['images_static_relative'] = "$web_root/public/images";

// Static images directory, absolute to the webserver root.
$GLOBALS['images_static_absolute'] = "$webserver_root/public/images";

//Composer vendor directory, absolute to the webserver root.
$GLOBALS['vendor_dir'] = "$webserver_root/vendor";
$GLOBALS['fonts_dir'] = "{$web_root}/public/fonts";
$GLOBALS['template_dir'] = $GLOBALS['fileroot'] . "/templates/";
$GLOBALS['incdir'] = $include_root;
// Location of the login screen file
$GLOBALS['login_screen'] = $GLOBALS['rootdir'] . "/login_screen.php";

// Variable set for Eligibility Verification [EDI-271] path
$GLOBALS['edi_271_file_path'] = $GLOBALS['OE_SITE_DIR'] . "/edi/";

//  Check necessary writeable paths exist for mPDF tool
if (is_dir($GLOBALS['OE_SITE_DIR'] . '/documents/mpdf/')) {
    if (! is_dir($GLOBALS['OE_SITE_DIR'] . '/documents/mpdf/ttfontdata/')) {
        mkdir($GLOBALS['OE_SITE_DIR'] . '/documents/mpdf/ttfontdata/', 0755);
    }
    if (! is_dir($GLOBALS['OE_SITE_DIR'] . '/documents/mpdf/pdf_tmp/')) {
        mkdir($GLOBALS['OE_SITE_DIR'] . '/documents/mpdf/pdf_tmp/', 0755);
    }
} else {
    mkdir($GLOBALS['OE_SITE_DIR'] . '/documents/mpdf/ttfontdata/', 0755, true);
    mkdir($GLOBALS['OE_SITE_DIR'] . '/documents/mpdf/pdf_tmp/', 0755);
}
// Safe bet support directories exist, define them.
define("_MPDF_TEMP_PATH", $GLOBALS['OE_SITE_DIR'] . '/documents/mpdf/pdf_tmp/');
define("_MPDF_TTFONTDATAPATH", $GLOBALS['OE_SITE_DIR'] . '/documents/mpdf/ttfontdata/');

// Includes composer autoload
// Note this also brings in following library files:
//  library/htmlspecialchars.inc.php - Include convenience functions with shorter names than "htmlspecialchars" (for security)
//  library/formdata.inc.php - Include sanitization/checking functions (for security)
//  library/sanitize.inc.php - Include sanitization/checking functions (for security)
//  library/date_functions.php - Includes functions for date internationalization
//  library/validation/validate_core.php - Includes functions for page validation
//  library/translation.inc.php - Includes translation functions
require_once $GLOBALS['vendor_dir'] ."/autoload.php";

/**
 * @var Dotenv Allow a `.env` file to be read in and applied as $_SERVER variables.
 *
 * This allows to define a "development" environment which can then load up
 * different variables and reporting/debugging functionality. Should be used in
 * development only, not for production
 *
 * @link http:https://open-emr.org/wiki/index.php/Dotenv_Usage
 */
if (file_exists("{$webserver_root}/.env")) {
    $dotenv = new Dotenv($webserver_root);
    $dotenv->load();
}

// @TODO This needs to be broken out to it's own function, but for time's sake
// @TODO putting it here until we land on a good place. RD 2017-05-02

$twigOptions = [
    'debug' => false,
];

$twigLoader = new Twig_Loader_Filesystem();
$twigEnv = new Twig_Environment($twigLoader, $twigOptions);

if (array_key_exists('debug', $twigOptions) && $twigOptions['debug'] == true) {
    $twigEnv->addExtension(new Twig_Extension_Debug());
}
$twigEnv->addGlobal('assets_dir', $GLOBALS['assets_static_relative']);
$twigEnv->addGlobal('srcdir', $GLOBALS['srcdir']);
$twigEnv->addGlobal('rootdir', $GLOBALS['rootdir']);
$twigEnv->addFilter(new Twig_SimpleFilter('translate', function ($string) {
    return xl($string);
}));

/** Twig_Loader */
$GLOBALS['twigLoader'] = $twigLoader;
/** Twig_Environment */
$GLOBALS['twig'] = $twigEnv;

// This will open the openemr mysql connection.
require_once (dirname(__FILE__) . "/../library/sql.inc");

// Include the version file
require_once (dirname(__FILE__) . "/../version.php");

// The logging level for common/logging/logger.php
// Value can be TRACE, DEBUG, INFO, WARN, ERROR, or OFF:
//    - DEBUG/INFO are great for development
//    - INFO/WARN/ERROR are great for production
//    - TRACE is useful when debugging hard to spot bugs
$GLOBALS["log_level"] = "OFF";

// Should Doctrine make use of connection pooling? Database connection pooling is a method
// used to keep database connections open so they can be reused by others. (The only reason
// to not use connection pooling is if your server has limited resources.)
$GLOBALS["doctrine_connection_pooling"] = true;

// Defaults for specific applications.
$GLOBALS['weight_loss_clinic'] = false;
$GLOBALS['ippf_specific'] = false;

// Defaults for drugs and products.
$GLOBALS['inhouse_pharmacy'] = false;
$GLOBALS['sell_non_drug_products'] = 0;

$glrow = sqlQuery("SHOW TABLES LIKE 'globals'");
if (!empty($glrow)) {
  // Collect user specific settings from user_settings table.
  //
    $gl_user = array();
  // Collect the user id first
    $temp_authuserid = '';
    if (!empty($_SESSION['authUserID'])) {
      //Set the user id from the session variable
        $temp_authuserid = $_SESSION['authUserID'];
    } else {
        if (!empty($_POST['authUser'])) {
            $temp_sql_ret = sqlQuery("SELECT `id` FROM `users` WHERE `username` = ?", array($_POST['authUser']));
            if (!empty($temp_sql_ret['id'])) {
              //Set the user id from the login variable
                $temp_authuserid = $temp_sql_ret['id'];
            }
        }
    }
    if (!empty($temp_authuserid)) {
        $glres_user = sqlStatement(
            "SELECT `setting_label`, `setting_value` " .
            "FROM `user_settings` " .
            "WHERE `setting_user` = ? " .
            "AND `setting_label` LIKE 'global:%'",
            array($temp_authuserid)
        );
        for ($iter=0; $row=sqlFetchArray($glres_user); $iter++) {
          //remove global_ prefix from label
            $row['setting_label'] = substr($row['setting_label'], 7);
            $gl_user[$iter]=$row;
        }
    }
  // Set global parameters from the database globals table.
  // Some parameters require custom handling.
  //
    $GLOBALS['language_menu_show'] = array();
    $glres = sqlStatement(
        "SELECT gl_name, gl_index, gl_value FROM globals " .
        "ORDER BY gl_name, gl_index"
    );
    while ($glrow = sqlFetchArray($glres)) {
        $gl_name  = $glrow['gl_name'];
        $gl_value = $glrow['gl_value'];
      // Adjust for user specific settings
        if (!empty($gl_user)) {
            foreach ($gl_user as $setting) {
                if ($gl_name == $setting['setting_label']) {
                    $gl_value = $setting['setting_value'];
                }
            }
        }
        if ($gl_name == 'language_menu_other') {
            $GLOBALS['language_menu_show'][] = $gl_value;
        } elseif ($gl_name == 'css_header') {
            $GLOBALS[$gl_name] = $rootdir.'/themes/'.$gl_value.'?v='.$v_js_includes;
            $temp_css_theme_name = $gl_value;
        } elseif ($gl_name == 'weekend_days') {
            $GLOBALS[$gl_name] = explode(',', $gl_value);
        } elseif ($gl_name == 'specific_application') {
            if ($gl_value == '2') {
                $GLOBALS['ippf_specific'] = true;
            } elseif ($gl_value == '3') {
                $GLOBALS['weight_loss_clinic'] = true;
            }
        } elseif ($gl_name == 'inhouse_pharmacy') {
            if ($gl_value) {
                $GLOBALS['inhouse_pharmacy'] = true;
            }
            if ($gl_value == '2') {
                $GLOBALS['sell_non_drug_products'] = 1;
            } elseif ($gl_value == '3') {
                $GLOBALS['sell_non_drug_products'] = 2;
            }
        } elseif ($gl_name == 'gbl_time_zone') {
          // The default PHP time zone is set here if it was specified, and is used
          // as source data for the MySQL time zone here and in some other places
          // where MySQL connections are opened.
            if ($gl_value) {
                date_default_timezone_set($gl_value);
            }
          // Synchronize MySQL time zone with PHP time zone.
            sqlStatement("SET time_zone = ?", array((new DateTime())->format("P")));
        } else {
            $GLOBALS[$gl_name] = $gl_value;
        }
    }
  // Language cleanup stuff.
    $GLOBALS['language_menu_login'] = false;
    if ((count($GLOBALS['language_menu_show']) >= 1) || $GLOBALS['language_menu_showall']) {
        $GLOBALS['language_menu_login'] = true;
    }

  // Added this $GLOBALS['concurrent_layout'] set to 3 in order to support legacy forms
  // that may use this; note this global has been removed from the standard codebase.
    $GLOBALS['concurrent_layout'] = 3;

// Additional logic to override theme name.
// For RTL languages we substitute the theme name with the name of RTL-adapted CSS file.
    $rtl_override = false;
    if (isset( $_SESSION['language_direction'] )) {
        if ($_SESSION['language_direction'] == 'rtl' &&
        !strpos($GLOBALS['css_header'], 'rtl')  ) {
            // the $css_header_value is set above
            $rtl_override = true;
        }
    } elseif (isset( $_SESSION['language_choice'] )) {
        //this will support the onsite patient portal which will have a language choice but not yet a set language direction
        $_SESSION['language_direction'] = getLanguageDir($_SESSION['language_choice']);
        if ($_SESSION['language_direction'] == 'rtl' &&
        !strpos($GLOBALS['css_header'], 'rtl')) {
            // the $css_header_value is set above
            $rtl_override = true;
        }
    } else {
        //$_SESSION['language_direction'] is not set, so will use the default language
        $default_lang_id = sqlQuery('SELECT lang_id FROM lang_languages WHERE lang_description = ?', array($GLOBALS['language_default']));

        if (getLanguageDir($default_lang_id['lang_id']) === 'rtl' && !strpos($GLOBALS['css_header'], 'rtl')) {
// @todo eliminate 1 SQL query
            $rtl_override = true;
        }
    }


    // change theme name, if the override file exists.
    if ($rtl_override) {
        // the $css_header_value is set above
        $new_theme = 'rtl_' . $temp_css_theme_name;

        // Check file existance
        if (file_exists($include_root.'/themes/'.$new_theme)) {
            $GLOBALS['css_header'] = $rootdir.'/themes/'.$new_theme.'?v='.$v_js_includes;
        } else {
            // throw a warning if rtl'ed file does not exist.
            error_log("Missing theme file ".text($include_root).'/themes/'.text($new_theme));
        }
    }
    unset( $temp_css_theme_name, $new_theme,$rtl_override);
    // end of RTL section

  //
  // End of globals table processing.
} else {
  // Temporary stuff to handle the case where the globals table does not
  // exist yet.  This will happen in sql_upgrade.php on upgrading to the
  // first release containing this table.
    $GLOBALS['language_menu_login'] = true;
    $GLOBALS['language_menu_showall'] = true;
    $GLOBALS['language_menu_show'] = array('English (Standard)','Swedish');
    $GLOBALS['language_default'] = "English (Standard)";
    $GLOBALS['translate_layout'] = true;
    $GLOBALS['translate_lists'] = true;
    $GLOBALS['translate_gacl_groups'] = true;
    $GLOBALS['translate_form_titles'] = true;
    $GLOBALS['translate_document_categories'] = true;
    $GLOBALS['translate_appt_categories'] = true;
    $timeout = 7200;
    $openemr_name = 'OpenEMR';
    $css_header = "$rootdir/themes/style_default.css";
    $GLOBALS['css_header'] = $css_header;
    $GLOBALS['schedule_start'] = 8;
    $GLOBALS['schedule_end'] = 17;
    $GLOBALS['calendar_interval'] = 15;
    $GLOBALS['phone_country_code'] = '1';
    $GLOBALS['disable_non_default_groups'] = true;
    $GLOBALS['ippf_specific'] = false;
}

// If >0 this will enforce a separate PHP session for each top-level
// browser window.  You must log in separately for each.  This is not
// thoroughly tested yet and some browsers might have trouble with it,
// so make it 0 if you must.  Alternatively, you can set it to 2 to be
// notified when the session ID changes.
$GLOBALS['restore_sessions'] = 1; // 0=no, 1=yes, 2=yes+debug

// Theme definition.  All this stuff should be moved to CSS.
//
$top_bg_line = ' bgcolor="#dddddd" ';
$GLOBALS['style']['BGCOLOR2'] = "#dddddd";
$bottom_bg_line = $top_bg_line;
$title_bg_line = ' bgcolor="#bbbbbb" ';
$nav_bg_line = ' bgcolor="#94d6e7" ';
$login_filler_line = ' bgcolor="#f7f0d5" ';
$logocode = "<img class='img-responsive center-block' src='" . $GLOBALS['OE_SITE_WEBROOT'] . "/images/login_logo.gif'>";
// optimal size for the tiny logo is height 43 width 86 px
// inside the open emr they will be auto reduced
$tinylogocode1 = "<img class='tinylogopng' src='" . $GLOBALS['OE_SITE_WEBROOT'] . "/images/logo_1.png'>";
$tinylogocode2 = "<img class='tinylogopng' src='" . $GLOBALS['OE_SITE_WEBROOT'] . "/images/logo_2.png'>";

$linepic = "$rootdir/pic/repeat_vline9.gif";
$table_bg = ' bgcolor="#cccccc" ';
$GLOBALS['style']['BGCOLOR1'] = "#cccccc";
$GLOBALS['style']['TEXTCOLOR11'] = "#222222";
$GLOBALS['style']['HIGHLIGHTCOLOR'] = "#dddddd";
$GLOBALS['style']['BOTTOM_BG_LINE'] = $bottom_bg_line;
// The height in pixels of the Logo bar at the top of the login page:
$GLOBALS['logoBarHeight'] = 110;
// The height in pixels of the Navigation bar:
$GLOBALS['navBarHeight'] = 22;
// The height in pixels of the Title bar:
$GLOBALS['titleBarHeight'] = 40;

// The assistant word, MORE printed next to titles that can be clicked:
//   Note this label gets translated here via the xl function
//    -if you don't want it translated, then strip the xl function away
$tmore = xl('(More)');
// The assistant word, BACK printed next to titles that return to previous screens:
//   Note this label gets translated here via the xl function
//    -if you don't want it translated, then strip the xl function away
$tback = xl('(Back)');

// This is the idle logout function:
// if a page has not been refreshed within this many seconds, the interface
// will return to the login page
if (!empty($special_timeout)) {
    $timeout = intval($special_timeout);
}

$versionService = new \services\VersionService();
$version = $versionService->fetch();

if (!empty($version)) {
    //Version tag
    $patch_appending = "";
    //Collected below function call to a variable, since unable to directly include
    // function calls within empty() in php versions < 5.5 .
    $version_getrealpatch = $version->getRealPatch();
    if (($version->getRealPatch() != '0') && (!(empty($version_getrealpatch)))) {
        $patch_appending = " (".$version->getRealPatch().")";
    }

    $openemr_version = $version->getMajor() . "." . $version->getMinor() . "." . $version->getPatch();
    $openemr_version .= $version->getTag() . $patch_appending;
} else {
    $openemr_version = xl('Unknown version');
}

$srcdir = $GLOBALS['srcdir'];
$login_screen = $GLOBALS['login_screen'];
$GLOBALS['css_header'] = $css_header;
$GLOBALS['backpic'] = $backpic;

// 1 = send email message to given id for Emergency Login user activation,
// else 0.
$GLOBALS['Emergency_Login_email'] = empty($GLOBALS['Emergency_Login_email_id']) ? 0 : 1;

//set include_de_identification to enable De-identification (currently de-identification works fine only with linux machines)
//Run de_identification_upgrade.php script to upgrade OpenEMR database to include procedures,
//functions, tables for de-identification(Mysql root user and password is required for successful
//execution of the de-identification upgrade script)
$GLOBALS['include_de_identification']=0;
// Include the authentication module code here, but the rule is
// if the file has the word "login" in the source code file name,
// don't include the authentication module - we do this to avoid
// include loops.

if (($ignoreAuth_offsite_portal === true) && ($GLOBALS['portal_offsite_enable'] == 1)) {
    $ignoreAuth = true;
} elseif (($ignoreAuth_onsite_portal_two === true) && ($GLOBALS['portal_onsite_two_enable'] == 1)) {
    $ignoreAuth = true;
}
if (!$ignoreAuth) {
    include_once("$srcdir/auth.inc");
}


// This is the background color to apply to form fields that are searchable.
// Currently it is applicable only to the "Search or Add Patient" form.
$GLOBALS['layout_search_color'] = '#ffff55';

//EMAIL SETTINGS
$SMTP_Auth = !empty($GLOBALS['SMTP_USER']);


//module configurations
$GLOBALS['baseModDir'] = "interface/modules/"; //default path of modules
$GLOBALS['customModDir'] = "custom_modules"; //non zend modules
$GLOBALS['zendModDir'] = "zend_modules"; //zend modules

// Don't change anything below this line. ////////////////////////////

$encounter = empty($_SESSION['encounter']) ? 0 : $_SESSION['encounter'];

if (!empty($_GET['pid']) && empty($_SESSION['pid'])) {
    $_SESSION['pid'] = $_GET['pid'];
} elseif (!empty($_POST['pid']) && empty($_SESSION['pid'])) {
    $_SESSION['pid'] = $_POST['pid'];
}
$pid = empty($_SESSION['pid']) ? 0 : $_SESSION['pid'];
$userauthorized = empty($_SESSION['userauthorized']) ? 0 : $_SESSION['userauthorized'];
$groupname = empty($_SESSION['authProvider']) ? 0 : $_SESSION['authProvider'];

//This is crucial for therapy groups and patients mechanisms to work together properly
$attendant_type = (empty($pid) && isset($_SESSION['therapy_group'])) ? 'gid' : 'pid';
$therapy_group = (empty($pid) && isset($_SESSION['therapy_group'])) ? $_SESSION['therapy_group'] : 0;

// global interface function to format text length using ellipses
function strterm($string, $length)
{
    if (strlen($string) >= ($length-3)) {
        return substr($string, 0, $length-3) . "...";
    } else {
        return $string;
    }
}

// Override temporary_files_dir if PHP >= 5.2.1.
if (version_compare(phpversion(), "5.2.1", ">=")) {
    $GLOBALS['temporary_files_dir'] = rtrim(sys_get_temp_dir(), '/');
}

// turn off PHP compatibility warnings
ini_set("session.bug_compat_warn", "off");