Well for one, correct your syntax. The fifth line should be something like
$comment =~ s/$l/****/g;
= isn't the right operator for substitution.
Here is some working code that you should be able to modify.
my $foo = "man, that's some badass motherfucking shit!";
my @badwords = qw/ass fuck shit/;
foreach my $word (@badwords) {
my $bleep = "*" x length($word);
$foo =~ s/$word/$bleep/g;
}
print $foo, "\n";
which outputs
man, that's some bad*** mother****ing ****!
Updated Formatting
Update 2 In your database, the words are one per line it seems. Therefore, the words all have a \n on the end of them, so unless the "bad" word in the comment has a newline after it, it won't match. Make the syntax correction I noted above, and add chomp($l); as the first statement in your loop, and it should work. The chomp removes the last character of a string if it is a newline.
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