Description:
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One thing that seems clear from my experience, but which is not documented, is that ftp_ssl_connect silently falls back to ftp_connect if ftps is not available. 

Test case: make a ftps connection to a server which does not support ftps. You will still get a connection and be able to use all ftp_ functions. The connection will simply fall back to ftp_connect. 

This should be documented as it could lead to a false sense of security.

Reproduce code:
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	public function connect($host, $user, $pass, $type=self::FTP) {
		$this->_host = $host;
		$this->_user = $user;
		$this->_pw = $pass;
		$this->_type = $type;	
		if ($this->_type==self::FTPS) $this->_conn = ftp_ssl_connect($this->_host);
		else $this->_conn = ftp_connect($this->_host);
		$loginResult = ftp_login($this->_conn, $this->_user, $this->_pw);
		if (!$this->_conn) {
			cx_log("Could not connect to FTP server", __FUNCTION__, __FILE__, CX_ERR_CRITICAL);
			return FALSE;
		} else if (!$loginResult) {
			cx_log("Could not login to FTP server", __FUNCTION__, __FILE__, CX_ERR_CRITICAL);
			return FALSE;
		} else {
			return TRUE;
		}
	}


Expected result:
----------------
I would expect to have a ftps connection made, or an error stating that ftps is not available. 



Actual result:
--------------
Instead it silently gives me an ftp_connect (non SSL) connection, which leads to a false sense of security.

Found this out by running tcpdump and seeing that nothing was encrypted.