$string = "Param1(x,y,z), Param2(1,2,3), Param3(a,b,c)";
print "Original string: ", $string,  "\n";

($ext,$rem,$pre) =extract_bracketed($string,'()','.*?');
print "extracted: ", $ext, "\n";
print "remainder: ", $rem, "\n";
print "skip pref: ", $pre, "\n";