how to automatically extract all rar files recursively from a top directory in gmail

[hyungKim]

<?php
function scanDirectories($rootDir, $allowext, $allData=array()){
    $dirContent = scandir($rootDir);
    foreach($dirContent as $key => $content){
        $path = $rootDir.'/'.$content;
     $ext = substr($content, strrpos($content, '') + 1);
      if(in_array($ext, $allowext)) {
            if(is_file($path) && is_readable($path)){
                $allData[] = $path;}
            elseif(is_dir($path) && is_readable($path)) {
                // recursive callback to open new    directory
          $allData = scanDirectories($path, $allData);
            }    } }
    return $allData;}
$rootDir = "www";
$allowext = array("zip","rar","html");
$files_array = scanDirectories($rootDir,$allowext);
print_r($files_array);
?>

...ERROR IS:
Warning: scandir(www,www) [function.scandir]: The system cannot find the file specified. (code: 2) in C:\Zend\Apache2\htdocs\CSV\example.php on line 4

Warning: scandir(www) [function.scandir]: failed to open dir: No such file or directory in C:\Zend\Apache2\htdocs\CSV\example.php on line 4

Warning: scandir() [function.scandir]: (errno 2): No such file or directory in C:\Zend\Apache2\htdocs\CSV\example.php on line 4

Warning: Invalid argument supplied for foreach() in C:\Zend\Apache2\htdocs\CSV\example.php on line 5
Array ( )





please help ......:'(