伺服器的連線

$connection=ssh2_connect($host, $port);
if( ssh2_auth_pubkey_file($connection, $send_account,
        $file.'/id_dsa.pub',
        $file.'/id_dsa')) {
        echo "Public Key Authentication Successful\n";

}

//初始化 SFTP

$resSFTP = ssh2_sftp($connection);

//下載檔案

 $filename = APPLICATION_PATH . '/../data/edi/upload/1'
 
.time().'.txt';
 $opts = array(
 'http'=>array(
 'method'=>"GET",
 'timeout'=>60,
 )
 );
 $context = stream_context_create($opts);
 $strData = file_get_contents("ssh2.sftp://{$resSFTP}//downloadAmazonConnectivityTest", false, $context);
 file_put_contents($filename, $strData);

//上傳檔案

$re = copy(APPLICATION_PATH . '/../data/edi/YourConnectivityTest'
 
, "ssh2.sftp://{$resSFTP}/upload/1.txt" );