PHP использует SFTP для загрузки файлов

connection = ssh2_connect($host,$port);
        If (! $this - > connection) throw new exception ("$host failed to connect to $port port");
    }


    /**
     * login
     *@ param string $login_typelogin type
     *@ param string $username user name
     *@ param string $password password
     *@ param string $pub_key public key
     *@ param string $pri_key private key
     * @throws Exception]
     */
    public function login($login_type,$username, $password = null,$pub_key = null,$pri_key = null)
    {
        switch ($login_type) {
            Case 'username': // log in with username and password
                $login_result = ssh2_auth_password($this->connection, $username, $password);
                break;
            Case 'pub_key': // public key and private key login
                $login_result = ssh2_auth_pubkey_file($this->connection,$username,$pub_key,$pri_key);
                break;
        }
        If (! $login "result) throw new exception (" authentication failed ");
        $this->sftp = ssh2_sftp($this->connection);
        If (! $this - > SFTP) throw new exception ("failed to initialize SFTP");
        return true;
    }

    /**
     *Upload file
     *@ param string $local_filelocal file
     *@ param string $remote_file remote file
     * @throws Exception
     */
    public function upload_file($local_file, $remote_file)
    {
        $is_true = ssh2_scp_send($this->connection, $local_file, $remote_file, 0777);
        return $is_true;
    }

    /**
     *Download File
     * @param $local_file
     * @param $remote_file
     */
    public function down_file ($local_file, $remote_file)
    {
        ssh2_scp_recv($this->connection, $remote_file, $local_file);
    }

    /**
     *Determine whether the folder exists
     *@ param string $dir directory name
     * @return bool
     */
    public function dir_exits ($dir)
    {
        return file_exists("ssh2.sftp://$this->sftp".$dir);
    }


    /**
     *Create directory
     *@ param string $path example '/ home / username / newdir'
     *@ param int $auth default permissions of 0777
     */
    Public function SSH2? SFTP? Mchkdir ($path, $auth = 0777) // use to create a directory loop
    {
        $end = ssh2_sftp_mkdir($this->sftp, $path,$auth,true);
        If ($end! = = true) throw new exception ('folder creation failed ');
    }

    /**
     *Directory rename
     *@ param string $dir example: '/ home / username / newnamedir'
     *$dir example: / var / file / image
     * @return bool
     */
    public function rename ($old_dir,$new_dir)
    {
        $is_true = ssh2_sftp_rename($this->sftp,$old_dir,$new_dir);
        return $is_true;
    }

    /**
     *Delete file
     *@ param string $dir example: '/ home / username / dirname / filename'
     *$dir example: / var / file / image/404NotFound.png
     * @return bool
     */
    public function del_file ($dir)
    {
        $is_true = ssh2_sftp_unlink($this->sftp,$dir);
        return $is_true;
    }

    /**
     *Get files under folder
     *@ param string $remote_file path example: / var / file / image
     * @return array
     */
    public function scan_file_system($remote_file) {
        $sftp = $this->sftp;
        $dir = "ssh2.sftp://$sftp$remote_file";
        $tempArray = array();
        $handle = opendir($dir);
        //List of all files
        while (false !== ($file = readdir($handle))) {
            if (substr("$file", 0, 1) != "."){
                if(is_dir($file)){
//                $tempArray[$file] = $this->scanFilesystem("$dir/$file");
                } else {
                    $tempArray[]=$file;
                }
            }
        }
        closedir($handle);
        return $tempArray;
    }
}