Functional URL "OR" constant operator

Functional URL "OR" constant operator

I'm trying to filter down a view via a url params like so.. 

#View:<view_name>?location=<Need to pass 2 locations>

in PHP, Python, etc. To pass multiple values you go.. 

#View:<view_name>?location[]=a&location[]=b

which get's turned into location = array("a","b");

I REALLY need either an "OR" operator or an "IN" operator. You already have the "BETWEEN" operator that uses the semi-colon.

#View:<view_name>?FieldName1=<StartingRangeValue>;<EndingRangeValue>&FieldName1_op=58

Is there an unlisted operator that does this? or perhaps we could use the location[] syntax? 

-Stephen @srhyne