在PHP中使用ftp_get（）获取警告 [英] Getting warning on ftp_get() in PHP

问题描述

我尝试使用ftp_get（）
检索文本文件，并在执行脚本时收到警告：

I try to retrieve a text file using ftp_get() and when I execute the script I get warning:

ftp_get() [function.ftp-get]: Can't open data connection

Can some一个给出一些线索有什么问题。这是我以前的托管/服务器，因为我把它打破了。是否有一些特定的PHP配置。我检查了phpinfo并启用了FTP支持。
连接获取资源ID，用户名，密码和ftp主机通过CuteFTP工作。

Can some one give some clue what is wrong. This was working on my previous hosting/server since I moved it it broke. Are there some specific PHP configurations. I checked the phpinfo and the FTP support is enabled. The connection got resource id and the username, password and ftp host work through CuteFTP.

function _getFtpFile( $fileName = '' ) {
    if($fileName == '') {
        return false;
    }

    $model = $this->getModel();
    $params =& $model->getParams();

    $vebraHost = $params->get('vebra_host');
    $vebraUser = $params->get('vebra_username');
    $vebraPass = $params->get('vebra_password');
    $localFile = JPATH_BASE.'/tmp/tmp.csv';

    // Delete the file in case it exists
    @unlink($localFile);

    // set up basic connection
    $connId = ftp_connect($vebraHost);

    // login with username and password
    $loginResult = ftp_login($connId, $vebraUser, $vebraPass);

    // turn on passive mode transfers
    ftp_pasv($connId, true);

    // try to download $server_file and save to $localFile
    if (!ftp_get($connId, $localFile, $fileName, FTP_BINARY)) {
        $file = false;
    } else {
        $file = $localFile;
    }

    // close the connection
    ftp_close($connId);

    return $file;
}

推荐答案

像FTP问题，而不是PHP问题，因为无法打开数据连接是一个FTP错误425，这是一个FTP协议级错误。有很多FTP服务器可能导致的问题，特别是错误配置的问题。

To be honest, this sounds like an FTP problem, not a PHP problem, as a "Can't open data connection" is an FTP error 425, which is a FTP protocol level error. There are plenty of problems that an FTP server can cause, especially one that is misconfigured.

如果我猜测，我会说问题在于配置FTP服务器，可能在主动/被动设置中，但可能在防火墙设置的某处。它也可能存在于你的，但似乎不太可能，因为你仍然可以通过CuteFTP连接。

If I were to guess, I would say the problem lies within the configuration of the FTP server, possibly in the active/passive settings, but probably somewhere in their firewall settings. It could also lie in yours, but that seems unlikely, as you can still connect via CuteFTP.

FTP服务器是远程服务器还是脚本托管在？如果它们相同，很可能会有港口冲突。我会联系您的主机的支持，看看他们是否认识到这是一个问题。

Is the FTP server a remote server, or is the same one that script is hosted on? It's very possible there could be port conflicts if they are the same. I would get in contact with your hosting's support, see if they recognize it as an issue.

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