Feedback form script in RH8

Question

My form (see below) triggers a PHP script (see below) which is supposed to send the form data to my email address. It works perfectly in a regular web page, but when I've integrated into my WebHelp project the form fails to send anything and show a series of PHP errors (see below). I'm no PHP expert so I'd be grateful if anyone could advise me or suggest an alternative method of producing a Feedback Form in a WebHelp page.
FORM:
<form action="sendmail.php" method="post" name="Feedback" id="Feedback">
  <p><strong style="font-weight: bold;">Name</strong>:<br />
    <input name="name" type="text" id="Name" class="fields" size="30" />
  </p>
  <p><strong style="font-weight: bold;">Email</strong>:<br />
    <input name="email" type="text" id="Email" class="fields" size="30" />
  </p>
  <p><strong style="font-weight: bold;">Phone</strong>:<br />
    <input name="phone" type="text" id="Phone" class="fields" size="30" />
  </p>
  <p><strong style="font-weight: bold;">Firm</strong>:<br />
    <input name="firm" type="text" id="Firm" class="fields" size="30" />
  </p>
  <p><strong style="font-weight: bold;">Comments</strong>:<br />
    <textarea name="message" cols="60" rows="5"></textarea>
  </p>
  <p>
    <input name="Clear" type="reset" class="button" value="Clear" />
    <input
  name="Send" type="submit" class="button" id="Send" value="Send" />
  </p>
</form>
SCRIPT:
<?
$name = $_REQUEST['name'] ;
$email = $_REQUEST['email'] ;
$phone = $_REQUEST['phone'] ;
$firm = $_REQUEST['firm'] ;
$message = $_REQUEST['message'] ;
$http_referrer = getenv( "HTTP_REFERER" );
$messagelayout =
"This message was sent from:\n" .
"$http_referrer\n" .
"\n" .
"\n" .
"SENDER------------------------------------------------------\n\n" .
"Name: $name\n" .
"Email: $email\n" .
"Phone: $phone\n" .
"Firm: $firm\n" .
"\n" .
"MESSAGE-----------------------------------------------------\n\n" .
$message .
"\n\n------------------------------------------------------------\n" ;
if (!isset($_REQUEST['email'])) {
header( "Location: feedback.htm" ) ;
elseif (empty($name) || empty($email) || empty($phone) || empty($firm) ||empty($message)) {
header ( "Location: error.htm" ) ;
else {
mail( [email protected], "Documentation Feedback", $messagelayout, "From: $name <$email>" ) ;
header( "Location: thanks.htm" ) ;
?>
ERRORS:
Warning: Undefined variable: _REQUEST in C:\Inetpub\wwwroot\Documentation (ILE)\WebHelp\Working\sendmail.php on line 2
Warning: Undefined variable: _REQUEST in C:\Inetpub\wwwroot\Documentation (ILE)\WebHelp\Working\sendmail.php on line 3
Warning: Undefined variable: _REQUEST in C:\Inetpub\wwwroot\Documentation (ILE)\WebHelp\Working\sendmail.php on line 4
Warning: Undefined variable: _REQUEST in C:\Inetpub\wwwroot\Documentation (ILE)\WebHelp\Working\sendmail.php on line 5
Warning: Undefined variable: _REQUEST in C:\Inetpub\wwwroot\Documentation (ILE)\WebHelp\Working\sendmail.php on line 6
Warning: Cannot add header information - headers already sent by (output started at C:\Inetpub\wwwroot\Documentation (ILE)\WebHelp\Working\sendmail.php:2) in C:\Inetpub\wwwroot\Documentation (ILE)\WebHelp\Working\sendmail.php on line 26

Answer 1

Hi Guys, just got round to looking at this again.
The form now sends the email, but my "thank you" page isn't displayed. Also, if the required fields are not completed, my "error" page isn't displayed either.
I'm testing this form after it's been published to our web server, which is on the same server as our intranet and the forms on the intranet work fine using the same script. I'm convinced that RoboHelp is doing something weird with the script.
Any further help would be much appreciated.
Thanks
Jonathan