php - ftp_get - 警告:ftp_get():打开 BINARY 模式数据连接

I'm trying to write a script that will download files from an FTP server. They're all fairly large (nearly 2GB each). The script starts running, but then eventually terminates with the above error. Is it size related? Is there a way around this? Here's the code:

<?php

$ftp_server = "ftp.EXAMPLE.com";
$conn_id = ftp_connect ($ftp_server) or die("Couldn't connect to $ftp_server");
$login_result = ftp_login($conn_id, "USERNAME", "PASSWORD");
if ((!$conn_id) || (!$login_result)) die("FTP Connection Failed");
ftp_sync("download");   
ftp_close($conn_id); 

$mkdir = date('Y-m-d');
mkdir('encrypted/'.$mkdir, 0777);
smartCopy("./download/", 'encrypted/'.$mkdir);
chmodr("encrypted/".$mkdir, 0777);

function ftp_sync ($dir) {

    global $conn_id;

    if ($dir != ".") {
        if (ftp_chdir($conn_id, $dir) == false) {
            echo ("Change Dir Failed: $dir<BR>
");
            return;
        }
        if (!(is_dir($dir)))
            mkdir($dir);
        chdir ($dir);
    }

    $contents = ftp_nlist($conn_id, ".");
    foreach ($contents as $file) {

        if ($file == '.' || $file == '..')
            continue;

        if (@ftp_chdir($conn_id, $file)) {
            ftp_chdir ($conn_id, "..");
            ftp_sync ($file);
        }
        else
            ftp_get($conn_id, $file, $file, FTP_BINARY);
    }

    ftp_chdir ($conn_id, "..");
    chdir ("..");

}

function chmodr($path, $filemode) {
    if (!is_dir($path))
        return chmod($path, $filemode);

    $dh = opendir($path);
    while (($file = readdir($dh)) !== false) {
        if($file != '.' && $file != '..') {
            $fullpath = $path.'/'.$file;
            if(is_link($fullpath))
                return FALSE;
            elseif(!is_dir($fullpath) && !chmod($fullpath, $filemode))
                    return FALSE;
            elseif(!chmodr($fullpath, $filemode))
                return FALSE;
        }
    }

    closedir($dh);

    if(chmod($path, $filemode))
        return TRUE;
    else
        return FALSE;
}

function smartCopy($source, $dest, $folderPermission='0777',$filePermission='0777'){

    $result=false;

    if (is_file($source)) {
        if(is_dir($dest)) {
            if ($dest[strlen($dest)-1]!='/') 
                $__dest=$dest."/";
            $__dest .= basename($source);
            }
        else { 
            $__dest=$dest;
            }
        $result=copy($source, $__dest);
        chmod($__dest,$filePermission);
        }
    elseif(is_dir($source)) { 
        if(!is_dir($dest)) {
            @mkdir($dest,$folderPermission);
            chmod($dest,$folderPermission);
            }
        if ($source[strlen($source)-1]!='/') 
            $source=$source."/";
        if ($dest[strlen($dest)-1]!='/') 
            $dest=$dest."/";

        $return = true;
        $dirHandle=opendir($source);
        while($file=readdir($dirHandle)) { 
            if($file!="." && $file!="..") { 
                $result=smartCopy($source.$file, $dest.$file, $folderPermission, $filePermission);
                }
            }
        closedir($dirHandle);
        }
    else {
        $result=false;
        }
    return $result;
}

function deleteDirectory($dir) {
    if (!file_exists($dir)) return true;
    if (!is_dir($dir) || is_link($dir)) return unlink($dir);
        foreach (scandir($dir) as $item) {
            if ($item == '.' || $item == '..') continue;
            if (!deleteDirectory($dir . "/" . $item)) {
                chmod($dir . "/" . $item, 0777);
                if (!deleteDirectory($dir . "/" . $item)) return false;
            };
        }
        return rmdir($dir);
    } 
?>

推荐答案

你确定每个文件都是二进制的吗?