PHP Manual: Authenticate as "none"

Description

mixed ssh2_auth_none(resource $session, string $username)

Attempt "none" authentication which usually will (and should) fail. As part of the failure, this function will return an array of accepted authentication methods.

Parameters

session: An SSH connection link identifier, obtained from a call to ssh2_connect.
username: Remote user name.

Return Values

Returns true if the server does accept "none" as an authentication method, or an array of accepted authentication methods on failure.

Examples

Example #1 Retrieving a list of authentication methods

<?php
$connection = ssh2_connect('shell.example.com', 22);

$auth_methods = ssh2_auth_none($connection, 'user');

if (in_array('password', $auth_methods)) {
  echo "Server supports password based authentication\n";
}
?>