iRule Path Routing to pool review.

Hi viziony, 

I think you could use a switch statement rather than a lot of or conditions. This iRule should work for you.
Instead of starts_with, I use a wildcard *.  You could also use HTTP::path instead of HTTP::uri.

when HTTP_REQUEST {
    switch -glob -- [string tolower [HTTP::uri]] {
        "/a.php*" -
        "/b.php*" -
        "/c.php*" {
            pool my_pool_ABC
        }
        default {
            pool my_pool_XYZ
        }
    }
}

Let me know if this one works for you, or it needs adjustments.

KR
Daniel