$ret = file_put_contents( 'ssh2.sftp://' . $this->sftp_link . '/' . ltrim( $file, '/' ), $contents );
if ( $ret !== strlen( $contents ) )
$ret = file_put_contents( 'ssh2.sftp://' . $this->sftp_link . '/' . ltrim( $file, '/' ), $contents );
if ( $ret !== strlen( $contents ) )