WP_Filesystem_FTPext::__construct( array $opt = '' )

	public function __construct( $opt = '' ) {
		$this->method = 'ftpext';
		$this->errors = new WP_Error();

		// Check if possible to use ftp functions.
		if ( ! extension_loaded('ftp') ) {
			$this->errors->add('no_ftp_ext', __('The ftp PHP extension is not available'));
			return;
		}

		// This Class uses the timeout on a per-connection basis, Others use it on a per-action basis.

		if ( ! defined('FS_TIMEOUT') )
			define('FS_TIMEOUT', 240);

		if ( empty($opt['port']) )
			$this->options['port'] = 21;
		else
			$this->options['port'] = $opt['port'];

		if ( empty($opt['hostname']) )
			$this->errors->add('empty_hostname', __('FTP hostname is required'));
		else
			$this->options['hostname'] = $opt['hostname'];

		// Check if the options provided are OK.
		if ( empty($opt['username']) )
			$this->errors->add('empty_username', __('FTP username is required'));
		else
			$this->options['username'] = $opt['username'];

		if ( empty($opt['password']) )
			$this->errors->add('empty_password', __('FTP password is required'));
		else
			$this->options['password'] = $opt['password'];

		$this->options['ssl'] = false;
		if ( isset($opt['connection_type']) && 'ftps' == $opt['connection_type'] )
			$this->options['ssl'] = true;
	}