How can I assign the elements in an array to only the key values in a hash?

[blackjudas]

I have an array that keeps returning matches in a string, each match must be inserted into a hash as an empty key, this is what I have and it's obviuosly flawed.

keys(%hash) = @array;

Or should I go the route:

my $var = 0;

$var = @array;

for ($i = 0; $i <= $var; $i++) {
    %hash = ($array[$i] => "");
}

Any takers?

Originally posted as a Categorized Question.