rsform honeypot

rsform.php

$spam = false;
  
if($_POST['form']['HoneyPotFieldName'] != '') {
  $spam = true;
}
  
if (preg_match( "/bcc:|cc:|multipart|\[url|Content-Type:/i", implode($_POST['form']))) {
    $spam=true;
}

// Detect more than 3 outgoing links
if (preg_match_all("/<a|https?:/i", implode($_POST['form']), $out) > 3) 
{
    $spam=true;
}

if ($spam) 
{
   exit('We are unable to process your request - please contact us in other ways');
}