PHP FTP connecting but not reading folder

Question

I have a code I am trying to connect to a different server via PHP FTP connection.
I know that I am actually connecting to the server.

$ftp_conn = ftp_connect($ftp_server) or die("Could not connect to $ftp_server"); $login = ftp_login($ftp_conn, $ftp_username, $ftp_userpass); var_dump($login);

when I vardump the $login, I get a TRUE.

When I try to upload a file I get a 'error uploading file' so I tried to just pull a list of files on the connection:

$file_list = ftp_nlist($ftp_conn, "."); var_dump($file_list);

It's only returning bool(false).
I know the connections has files because I can view them via FileZilla with the same credentials.

Any idea what might be wrong? Is it possible a server setting that isn't allowing me to use this PHP script from a shared server?

Martin Prikryl · Accepted Answer · 2021-01-02 18:20:11Z

Most typical cause of problems with ftp_list (ftp_nlist, ftp_put and other functions that require separate FTP data connection) is that PHP defaults to the active mode. And in 99% cases, one has to switch to the passive mode, to make the directory listing and transfer working. Use the ftp_pasv function.

$ftp_conn = ftp_connect($ftp_server) or die("Could not connect to $ftp_server"); $login = ftp_login($ftp_conn, $ftp_username, $ftp_userpass) or die("Login failed"); // turn passive mode on ftp_pasv($ftp_conn, true) or die("Unable switch to passive mode");

See my article on the active and passive FTP connection modes.

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