syntax problem

[derksj]

can someone help me with this syntax problem

i have this form
but how can i insert this if statement (if $contactpersoon show the tablerow else dont show this row)

<?php

include("includes/login.php");

@extract($_POST);
$name = stripslashes($name);
$subject = stripslashes($subject);
$headers = "From: $email \n";  

$headers .= "MIME-Version: 1.0\r\n";  

$headers .= "Content-Type: text/html";  

$messagefm = stripslashes
("
<p align=\"center\"><font size=\"4\">$subject</font></p>
<center><table border=\"0\" width=\"23%\">
     <tr>
    <td width=\"50%\" nowrap bgcolor=\"#C0C0C0\">Datum dienstverlening</td>
    <td width=\"50%\" nowrap>$datum_dienstverlening</td>
  </tr>


if ($contactpersoon)
echo "<tr><td width=\"50%\" nowrap bgcolor=\"#C0C0C0\">Contactpersoon</td><td width=\"50%\" nowrap>$contactpersoon</td></tr>";


  <tr>
    <td width=\"50%\" nowrap bgcolor=\"#C0C0C0\">Budgetnummer afdeling</td>
    <td width=\"50%\" nowrap>$budgetnummer_afdeling</td>
  </tr>
</table></center>
");
mail('[e-mail]',$subject,$messagefm,"$headers");
header("location:bedankt.php"); 
?>

[Merve]

Like this:

<?php

include("includes/login.php");

@extract($_POST);
$name = stripslashes($name);
$subject = stripslashes($subject);
$headers = "From: $email \n";  

$headers .= "MIME-Version: 1.0\r\n";  

$headers .= "Content-Type: text/html";  

if ($contactpersoon)
$contactthingy="<tr><td width="50%\" nowrap bgcolor=\"#C0C0C0\">Contactpersoon</td><td width=\"50%\" nowrap>$contactpersoon</td></tr>";

$messagefm = stripslashes
("
<p align=\"center\"><font size=\"4\">$subject</font></p>
<center><table border=\"0\" width=\"23%\">
     <tr>
    <td width=\"50%\" nowrap bgcolor=\"#C0C0C0\">Datum dienstverlening</td>
    <td width=\"50%\" nowrap>$datum_dienstverlening</td>
  </tr>".$contactthingy."<tr>
    <td width="50%\" nowrap bgcolor=\"#C0C0C0\">Budgetnummer afdeling</td>
    <td width=\"50%\" nowrap>$budgetnummer_afdeling</td>
  </tr>
</table></center>
");
mail('[e-mail]',$subject,$messagefm,"$headers");
header("location:bedankt.php"); 
?>