Gravity Forms Profanity Filter/Detector

gravity-forms-profanity.php

// Put in your themes functions.php file

add_filter( 'gform_pre_send_email', 'before_email', 10, 3);
function before_email( $email, $form, $entry ) {
    // Add your own words to the array, or convert a CSV like I did
    $swear_array = ['very','bad','language','word','array'];
    $swear_alert = "";
    $email_message = strval(strip_tags($email['message']));
    foreach ($swear_array as $swear) {
        if (preg_match("/\b".$swear."\b/i", $email_message)) {
            // Profanity detected
            $swear_alert = "(PROFANITY ALERT)";
        }else{
            // No bad language detected
        }
    }

    $email['subject'] .=  ' '.$swear_alert;
    return $email;
}