using globalize(STR_NOHTML, INT, etc...)

[Oreamnos]

I am trying to use vB's globalize function to check, trim, and validate data. I am using this:

PHP Code:

globalize($_REQUEST, array(
        'field1'=>STR_NOHTML,
        'field2'=>INT
)); 


I have 2 questions about what this function returns and additional arguments it can take
1. if field2 is not an integer, how do I know or check?
2. if field1 is required is there an argument that will check that the field is not blank. for example something like 'field1'=>STR_NOHTML, REQUIRED

thanks in advance
eric