Description:
------------
According to the RuleBasedNumberFormat documentation: http://www.icu-
project.org/apiref/icu4c/classRuleBasedNumberFormat.html#details, a rule pattern 
string can have multiple rule sets.
When calling the format method, it is possible to select the rule set to use. 

But it PHP seems that this is not possible in the current implementation:

NumberFormatter::string format ( number $value [, int $type ] )

Notice that $type is an integer and may take only these possible values:
NumberFormatter::TYPE_DEFAULT
NumberFormatter::TYPE_INT32
NumberFormatter::TYPE_INT64
NumberFormatter::TYPE_DOUBLE
NumberFormatter::TYPE_CURRENCY

For rule set selection to work $type should be a string (the rule set name).


Test script:
---------------
$ruleSet='
%spellout-cardinal:
1:one;
%spellout-ordinal:
1:first;
';

$formatter = new NumberFormatter(null, NumberFormatter::PATTERN_RULEBASED, $ruleSet);

echo $formatter->format(1, 'spellout-ordinal');

Expected result:
----------------
first

Actual result:
--------------
PHP Warning:  NumberFormatter::format() expects parameter 2 to be long, string 
given in /home/raducu/Workspace/Spelling/numbers.php on line 12