# ssh2_auth_none

(PECL ssh2 >= 0.9.0)

ssh2_auth_none — Authenticate as "none"

### 说明

ssh2_auth_none ( resource `$session` , string `$username` ) : mixed

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

### 参数

`session`

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

`username`

  Remote user name.

### 返回值

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

### 范例

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";
    }
    ?>