How to control order of files being displayed in dynamic select box

I haven't touched PHP in about 11 years so be kind to me! I need to update code that builds a dynamic select on a page. It just reads in the files. How can I control the order of the files displayed? I want a specific file to be first.
/////////////////////////////////////////////////////////////////////
function load($htmlFrm, $cancelFormSubmission){
            global $OMNITURE_REPORTS_DIR;
            
            // load the drop down data
            $type = $this->dataRow['type']->getValue();
            $typeFilter = "val not like 'locale%'"; // by default do not show locale types.
            if (preg_match('/locale/', $type)){
                  $typeFilter = "val like 'locale%'";
            }
            $this->typeList = new CSimpleDataSet($this->db, new CQuery(new CString("SELECT caption, val FROM lists WHERE groupName='opsr2.omniture.type' AND $typeFilter ORDER BY priority ASC")));
            $this->typeList->loadData();

            // get the report template file list;
            if (self::$reportList === null){
                  self::$reportList = array();
                  foreach (scandir($OMNITURE_REPORTS_DIR) as $file){
                        // only show files in the reports menu, not directories.
                        if (is_file("$OMNITURE_REPORTS_DIR/$file")){
                              self::$reportList[] = new CString($file);
                        }
                  }
            }
/////////////////////////////////////////////////////////////////////////////////////////
// generate a report list pulldown menu:
                  if (count(self::$reportList)){
                        $reportSel = new CSelect($this->parentReport->getHtmlFrm(), new CString("reportSelector"), new CString(''));
                        $reportSel->setClassName('reportSelector');
                        foreach (self::$reportList as $file){
                              $reportSel->addOption($file,$file);
                        }
                        $tpl->assign('html_reportSelector',$reportSel->getHtml());
                  } // end: if