哪位高手帮我看看我这个程序咋调试不出来

[hotbloodboy]

<?PHP

function directory_size($directory){

$directorysize=0;

//open the directory and read its contents
if ($dh=@open($directory)){
//iterate through each directory entry
while($filename=readdir($dh)){

//fileter out unwanted directory entries
if ($filename !="."&& $filename !=".."){
//file ,so determine size and add to total
if (is_file($directory."/".$filename))
$directorysize+=file_size($directory."/".$filename);
//new directory ,so initiate recuresion .*/
if (is_dir($directory."/".$filename))
$directorysize+=directory_size($directory."/".$filename);
}
}
}
@closeddir($dh);
return $directorysize;
} #end directory_size()

$directory="D:\AppServ\www";
$totalsize=round((directory_size($directory)/1048576),2);
printf("directory %s: %f MB",$directory,$totalsize);
?>

[hotbloodboy]

本来是显示目录大小的，结果却什么都显示不出来

[去圣西罗-为尤文喝彩]

先把@去掉，看看哪行报错

[asasdaf]

if ($dh=@open($directory))
其实我不知道open这个函数是什么，自定义的？

[黄袍披身]

什么人乱复制复制成这样了，正确的代码在下面

function directory_size($directory)
{
    $directorySize = 0;
    /* Open the directory and read its contents. */
    if ($dh = @opendir($directory)) {
        /* Iterate through each directory entry. */
        while (($filename = readdir($dh))) {
            /* Filter out some of the unwanted directory entries. */
            if ($filename != "." && $filename != "..") {
                // File, so determine size and add to total.
                if (is_file($directory . "/" . $filename))
                    $directorySize += filesize($directory . "/" . $filename);
                // New directory, so initiate recursion. */
                if (is_dir($directory . "/" . $filename))
                    $directorySize += directory_size($directory . "/" . $filename);
            }
        } #endWHILE
    } #endIF
    @closedir($dh);
    return $directorySize;
} #end directory_size()