Description:
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Hi,
  I am using php4.1, when i try connect to the FTP server via fsockopen, after login succeesfully, i can't list or get files from the server, the system prompt me 425 Can't open data connection.  How to solve this problem?

Thank you...

Reproduce code:
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$fp = fsockopen("ftpip",21);
fputs($fp,"USER myname\r\n");
echo fgets($fp,4096);

fputs($fp,"PASS mypassword\r\n");
echo fgets($fp,4096);

fputs($fp,"TYPE A\r\n");
echo fgets($fp,4096);

fputs($fp,"PASV\r\n");
echo fgets($fp,4096);

fputs($fp,"RETR test.txt\r\n");
echo fgets($fp,4096);

fputs($fp,"quit\r\n");

Expected result:
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425 Can't open data connection.