有谁知道围绕pfsockopen（）的SSH / SFTP / FTP包装？

Question

Does anyone know a SSH/ SFTP/ FTP wrapper class around pfsockopen();?? I'm still on my quest to keep persistent connections in PHP.

Answer 1

After a quick read, it looks like opening a socket deals with a different layer then what you are wanting. You want to connect via SSH or SFTP, which is the Application Layer using a method that makes connections via TTP/TLS/UDP, which is the transport layer.

So really what you want (I think) is to create an SSL or TLS connection using the pfsockopen() function, and then use that connection to pass data via the SSH/SFTP protocol.

According to the PHP site:

If you have compiled in OpenSSL support, you may prefix the hostname with either ssl:// or tls:// to use an SSL or TLS client connection over TCP/IP to connect to the remote host.

So my best guess is that you set your hostname to start with ssl:// and then use the SSH or SFTP port as the port (so port 22 or port 989). Something like:

$persistent_socket = pfsockopen("ssl://myhostsite", 22);

or

$persistent_socket = pfsockopen("ssl://myhostsite", 989);