function getBackup($host = 'localhost',$user = 'root',$pass= '',$name= 'rfid_demo_csts',$tables = '*'){
        $return='';
        $link = mysqli_connect($host, $user, $pass, $name);

        if($tables == '*')
        {
            $tables = array();
            $result = mysqli_query($link,'SHOW TABLES');
            while($row = mysqli_fetch_row($result))
            {
                $tables[] = $row[0];
            }
        }
        else
        {
            $tables = is_array($tables) ? $tables : explode(',',$tables);
        }

        //cycle through
        foreach($tables as $table)
        {
            $result = mysqli_query($link,'SELECT * FROM '.$table);
            $num_fields = mysqli_num_fields($result);

            $return.= 'DROP TABLE IF EXISTS '.$table.';';
            $row2 = mysqli_fetch_row(mysqli_query($link,'SHOW CREATE TABLE '.$table));

            $return.= "\n\n".$row2[1].";\n\n";

            for ($i = 0; $i < $num_fields; $i++)
            {
                while($row = mysqli_fetch_row($result))
                {
                    $return.= 'INSERT INTO '.$table.' VALUES(';
                    for($j=0; $j < $num_fields; $j++)
                    {
                        $row[$j] = addslashes($row[$j]);
                        if (isset($row[$j])) { $return.= '"'.$row[$j].'"' ; } else { $return.= '""'; }
                        if ($j < ($num_fields-1)) { $return.= ','; }
                    }
                    $return.= ");\n";
                }
            }
            $return.="\n\n\n";
        }

        $handle = fopen('#DB_BACKUP/DBCSTS_'.date("Ymd").'.sql','w+');
        fwrite($handle,$return);
        fclose($handle);

        //add below code to download it as a sql file
        Header('Content-type: application/sql');
        Header('Content-Disposition: attachment; filename=DBCSTS_'.date("Ymd").'.sql','w+');
        echo $return;

        $data['title'] = 'EXPORT';
        $data['sub_title'] = 'DATA';
        return view('user.exportSuccess', $data);
    }