[UPHPU] regex help

[Wade Preston Shearer]

I am trying to match both…

http://example.com/a/b

…and…

http://example.com/a/b/


^(.*)/(.*)$

…works for the first and…

^(.*)/(.*)/$


…works for the second, but I can't find a solution that matches both.  
Shouldn't the first match both because I am stopping after the "b" and  
not caring about thing else after that?
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