In Perl it is possible to do something like this (I hope the syntax is right...):
$string =~ m/lalala(I want this part)lalala/; $whatIWant = $1;
there's no need for regex. think simple.
>>> "lalala(I want this part)lalala".split("lalala") ['', '(I want this part)', ''] >>> "lalala(I want this part)lalala".split("lalala")[1] '(I want this part)' >>>