to pass an array and retrive an array from a function - Mailing list pgsql-bugs

i need a solution how to pass an array into a function and retrieve an
array from a function,itried but encountered many problems itried using
setof while returning but i couldnt solve it can any one help out with
this problem.
 if possible send me the example code explaining the way we should
follow.

with cheers
chowdary.