"PS: @All: IMHO this smells like trolling, there is no lazy involuntary way to provide that amount of syntax errors."
Nah, I don't think it is trolling. I think it is just someone who has a poor grasp of Perl and no understanding of the quote operators. I'm sure what was intended was:
my @array1 = (99999991, 99999992, 99999993 99999994, 99999995);
If that were the only mistake in the OP's post and if there hadn't been a whole string of posts from the same OP with similar lack of effort shown I'd overlook such obvious errors, provide some help and call it a win. As it is - meh.
Optimising for fewest key strokes only makes sense transmitting to Pluto or beyond