Go4Expert - Insert back up database in a folder

Hi..
I've seen code for back up database but when I run the code the database was backup outside the folder. I want to put the back up database inside the folder
here is the code:
Code:
<?php

include 'config.php';

  backup_tables('localhost','root','','payroll');



/* backup the db OR just a table */

function backup_tables($host,$user,$pass,$name,$tables = '*')

{

    

    $link = mysql_connect($host,$user,$pass);

    mysql_select_db($name,$link);

    

    //get all of the tables

    if($tables == '*')

    {

        $tables = array();

        $result = mysql_query('SHOW TABLES');

        while($row = mysql_fetch_row($result))

        {

            $tables[] = $row[0];

        }

    }

    else

    {

        $tables = is_array($tables) ? $tables : explode(',',$tables);

    }

    

    //cycle through

    foreach($tables as $table)

    {

        $result = mysql_query('SELECT * FROM '.$table);

        $num_fields = mysql_num_fields($result);

        

        $return.= 'DROP TABLE '.$table.';';

        $row2 = mysql_fetch_row(mysql_query('SHOW CREATE TABLE '.$table));

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

        

        for ($i = 0; $i < $num_fields; $i++) 

        {

            while($row = mysql_fetch_row($result))

            {

                $return.= 'INSERT INTO '.$table.' VALUES(';

                for($j=0; $j<$num_fields; $j++) 

                {

                    $row[$j] = addslashes($row[$j]);

                    $row[$j] = ereg_replace("\n","\\n",$row[$j]);

                    if (isset($row[$j])) { $return.= '"'.$row[$j].'"' ; } else { $return.= '""'; }

                    if ($j<($num_fields-1)) { $return.= ','; }

                }

                $return.= ");\n";

            }

        }

        $return.="\n\n\n";

    }

    

    //save file

    $myfoldername = "backup_DBPayroll";//your folders name 

    $handle = fopen(getcwd().$myfoldername.'db-backup-'.time().'-'.(md5(implode(',',$tables))).'.sql','w+');

    

   // $handle = fopen('db-backup-'.date('m-d-Y').'-'.(md5(implode(',',$tables))).'.sql','w+');

    fwrite($handle,$return);

    fclose($handle);

}



$smarty->display('header_cat.tpl');

$smarty->display('backup.tpl');

$smarty->display('footer.tpl');

?>
Thank you in advance