#!/opt/internet/bin/perlread(STDIN, $buffer, $ENV{'CONTENT_LENGTH'});@pairs = split(/&/, $buffer);foreach $pair (@pairs){    ($name, $value) = split(/=/, $pair);    $value =~ tr/+/ /;    $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;    # Stop people from using subshells to execute commands    $value =~ s/~!/ ~!/g;     $FORM{$name} = $value;}print "Content-type: text/plain\n\n";print "$FORM{'string'} reversed is: ";$foo=reverse($FORM{'string'});print "$foo\n";exit 0;