Description:
------------
when passing a blank space instead of NULL or a valid locale, the \IntlDateFormatter::formatObject returns an international formatted string...

I'm thinking this is the apropriate behavior but it is not documented...

Documentation states :
[http://be2.php.net/manual/en/intldateformatter.formatobject.php]
 locale
    The locale to use, or NULL to use the default one.



Test script:
---------------
<?php
	
	$dateTime = new \DateTime();

	echo \IntlDateFormatter::formatObject($dateTime, \IntlDateFormatter::NONE, null);
	echo PHP_EOL;
	echo \IntlDateFormatter::formatObject($dateTime, \IntlDateFormatter::NONE, '');
	echo PHP_EOL;
	echo PHP_EOL;


	echo \IntlDateFormatter::formatObject($dateTime, \IntlDateFormatter::SHORT, null);
	echo PHP_EOL;
	echo \IntlDateFormatter::formatObject($dateTime, \IntlDateFormatter::SHORT, '');
	echo PHP_EOL;
	echo PHP_EOL;


	echo \IntlDateFormatter::formatObject($dateTime, \IntlDateFormatter::MEDIUM, null);
	echo PHP_EOL;
	echo \IntlDateFormatter::formatObject($dateTime, \IntlDateFormatter::MEDIUM, '');
	echo PHP_EOL;
	echo PHP_EOL;


	echo \IntlDateFormatter::formatObject($dateTime, \IntlDateFormatter::LONG, null);
	echo PHP_EOL;
	echo \IntlDateFormatter::formatObject($dateTime, \IntlDateFormatter::LONG, '');
	echo PHP_EOL;
	echo PHP_EOL;


	echo \IntlDateFormatter::formatObject($dateTime, \IntlDateFormatter::FULL, null);
	echo PHP_EOL;
	echo \IntlDateFormatter::formatObject($dateTime, \IntlDateFormatter::FULL, '');




Expected result:
----------------
Either the script should throw a warning or the documentation needs an update to illustrate the actual behavior

Actual result:
--------------
20140921 01:04 AM
20140921 01:04 AM

9/21/14, 1:04 AM
2014-09-21 01:04

Sep 21, 2014, 1:04:40 AM
2014 M09 21 01:04:40

September 21, 2014 at 1:04:40 AM GMT+2
2014 M09 21 01:04:40 GMT+2

Sunday, September 21, 2014 at 1:04:40 AM Central European Summer Time
2014 M09 21, Sun 01:04:40 GMT+02:00