ssh2_auth_none

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

An SSH connection link identifier, obtained from a call to ssh2_connect().

Remote user name.

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

<?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";
}
?>