webinterface.cgi for Arduino communication through a webpage

#!/usr/bin/perl
#
# Takes post from webpage and sends it to a temp file for Arduino to eventually see.
#

local ($buffer, @pairs, $pair, $name, $value, %FORM);
    # Read in text
    $ENV{'REQUEST_METHOD'} =~ tr/a-z/A-Z/;
    if ($ENV{'REQUEST_METHOD'} eq "POST")
    {
        read(STDIN, $buffer, $ENV{'CONTENT_LENGTH'});
    }else {
        $buffer = $ENV{'QUERY_STRING'};
    }
    # Split information into name/value pairs
    @pairs = split(/&/, $buffer);
    foreach $pair (@pairs)
    {
        ($name, $value) = split(/=/, $pair);
        $value =~ tr/+/ /;
        $value =~ s/%(..)/pack("C", hex($1))/eg;
        $FORM{$name} = $value;
    }

    if($temper = $FORM{temper})
    {
      `echo "$temper:Temp\n" > /tmp/Thermo`;
    }