get('dateformatshortdate');
    if (version_compare(phpversion(), self::MIN_RECOMMENDED_PHP_VER) < 0) {
      $preUpgradeMessage .= '
';
      $preUpgradeMessage .= ts('You may proceed with the upgrade and CiviCRM %1 will continue working normally, but future releases will require PHP %2 or above. We recommend PHP version %3.', array(
         1 => $latestVer,
         2 => self::MIN_RECOMMENDED_PHP_VER,
         3 => self::RECOMMENDED_PHP_VER,
      ));
      $preUpgradeMessage .= '
';
    }
    // http://issues.civicrm.org/jira/browse/CRM-13572
    // Depending on how the code was upgraded, some sites may still have copies of old
    // source files left behind. This is often a forgivable offense, but it's quite
    // dangerous for CIVI-SA-2013-001.
    global $civicrm_root;
    $ofcFile = "$civicrm_root/packages/OpenFlashChart/php-ofc-library/ofc_upload_image.php";
    if (file_exists($ofcFile)) {
      if (@unlink($ofcFile)) {
        $preUpgradeMessage .= '
' . ts('This system included an outdated, insecure script (%1). The file was automatically deleted.', array(
            1 => $ofcFile,
          ));
      }
      else {
        $preUpgradeMessage .= '
' . ts('This system includes an outdated, insecure script (%1). Please delete it.', array(
            1 => $ofcFile,
          ));
      }
    }
    if (Civi::settings()->get('enable_innodb_fts')) {
      // The FTS indexing feature dynamically manipulates the schema which could
      // cause conflicts with other layers that manipulate the schema. The
      // simplest thing is to turn it off and back on.
      // It may not always be necessary to do this -- but I doubt we're going to test
      // systematically in future releases.  When it is necessary, one could probably
      // ignore the matter and simply run CRM_Core_InnoDBIndexer::fixSchemaDifferences
      // after the upgrade.  But that's speculative.  For now, we'll leave this
      // advanced feature in the hands of the sysadmin.
      $preUpgradeMessage .= '
' . ts('This database uses InnoDB Full Text Search for optimized searching. The upgrade procedure has not been tested with this feature. You should disable (and later re-enable) the feature by navigating to "Administer => System Settings => Miscellaneous".');
    }
    $ftAclSetting = Civi::settings()->get('acl_financial_type');
    $financialAclExtension = civicrm_api3('extension', 'get', array('key' => 'biz.jmaconsulting.financialaclreport'));
    if ($ftAclSetting && (($financialAclExtension['count'] == 1 && $financialAclExtension['status'] != 'Installed') || $financialAclExtension['count'] !== 1)) {
      $preUpgradeMessage .= '
' . ts('CiviCRM will in the future require the extension %1 for CiviCRM Reports to work correctly with the Financial Type ACLs. The extension can be downloaded here', array(
        1 => 'biz.jmaconsulting.financialaclreport',
        2 => 'https://github.com/JMAConsulting/biz.jmaconsulting.financialaclreport',
      ));
    }
  }
  /**
   * @param $message
   * @param $latestVer
   * @param $currentVer
   */
  public static function checkMessageTemplate(&$message, $latestVer, $currentVer) {
    $sql = "SELECT orig.workflow_id as workflow_id,
             orig.msg_title as title
            FROM civicrm_msg_template diverted JOIN civicrm_msg_template orig ON (
                diverted.workflow_id = orig.workflow_id AND
                orig.is_reserved = 1                    AND (
                    diverted.msg_subject != orig.msg_subject OR
                    diverted.msg_text    != orig.msg_text    OR
                    diverted.msg_html    != orig.msg_html
                )
            )";
    $dao = CRM_Core_DAO::executeQuery($sql);
    while ($dao->fetch()) {
      $workflows[$dao->workflow_id] = $dao->title;
    }
    if (empty($workflows)) {
      return;
    }
    $html = NULL;
    $pathName = dirname(dirname(__FILE__));
    $flag = FALSE;
    foreach ($workflows as $workflow => $title) {
      $name = CRM_Core_DAO::getFieldValue('CRM_Core_DAO_OptionValue',
        $workflow,
        'name',
        'id'
      );
      // check if file exists locally
      $textFileName = implode(DIRECTORY_SEPARATOR,
        array(
          $pathName,
          "{$latestVer}.msg_template",
          'message_templates',
          "{$name}_text.tpl",
        )
      );
      $htmlFileName = implode(DIRECTORY_SEPARATOR,
        array(
          $pathName,
          "{$latestVer}.msg_template",
          'message_templates',
          "{$name}_html.tpl",
        )
      );
      if (file_exists($textFileName) ||
        file_exists($htmlFileName)
      ) {
        $flag = TRUE;
        $html .= "{$title}";
      }
    }
    if ($flag == TRUE) {
      $html = "" . $html . "";
      $message .= '
' . ts("The default copies of the message templates listed below will be updated to handle new features or correct a problem. Your installation has customized versions of these message templates, and you will need to apply the updates manually after running this upgrade. Click here for detailed instructions. %2", array(
            1 => 'http://wiki.civicrm.org/confluence/display/CRMDOC/Message+Templates#MessageTemplates-UpgradesandCustomizedSystemWorkflowTemplates',
            2 => $html,
          ));
    }
  }
}