title: update form returns blank page
body: <p>i have developed a form to update several fields in a table but upon submission it returns an clear page. here is the code that i am using for submission.   </p>
  
  <pre><code>$editFormAction = $_SERVER['PHP_SELF'];
  if (isset($_SERVER['QUERY_STRING'])) {
    $editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);
  }
  
  if ((isset($_POST["MM_update"])) &amp;&amp; ($_POST["MM_update"] == "form")) {
  
      $doa_bits = explode('/', $_POST['doa']);
  
    $updateSQL = sprintf("UPDATE tbl_personalinjury SET role=%s, driverNo=%s, clientName=%s, address=%s, residedYrs=%s, cntctSolicitor=%s, telephoneHome=%s, telephoneMobile=%s, time=%s, time2=%s, dobDay=%s, dobMonth=%s, dobYear=%s, maritalStatus=%s, job=%s, niNo=%s, doaDay=%s, doaMonth=%s, doaYear=%s, time3=%s, time4=%s, weather=%s, location=%s, policeDetail=%s, accidentDetail=%s, blame=%s, witnessDetail=%s, dName=%s, dAdd=%s, dvMake=%s, dvModel=%s, dReg=%s, dInsurance=%s, tName=%s, tAdd=%s, tvMake=%s, tvModel=%s, tReg=%s, tInsurance=%s, seatbelt=%s, injuries=%s, injuries2=%s, recover=%s, timeoff=%s, loss=%s, expenses=%s, sports=%s, hospital=%s, gpName=%s, gpAddress=%s WHERE id=$client_id",
                         GetSQLValueString($_POST['role'], "text"),
                         GetSQLValueString($_POST['driverNo'], "text"),
                         GetSQLValueString($_POST['clientName'], "text"),
                         GetSQLValueString($_POST['address'], "text"),
                         GetSQLValueString($_POST['residedYrs'], "text"),
                         GetSQLValueString($_POST['cntctSolicitor'], "text"),
                         GetSQLValueString($_POST['telephoneHome'], "text"),
                         GetSQLValueString($_POST['telephoneMobile'], "text"),
                         GetSQLValueString($_POST['time'], "text"),
                         GetSQLValueString($_POST['time2'], "text"),
                         GetSQLValueString($_POST['dobDay'], "text"),
                         GetSQLValueString($_POST['dobMonth'], "text"),
                         GetSQLValueString($_POST['dobYr'], "text"),
                         GetSQLValueString($_POST['maritalStatus'], "text"),
                         GetSQLValueString($_POST['job'], "text"),
                         GetSQLValueString($_POST['niNo'], "text"),
                         GetSQLValueString($doa_bits[0], "text"),
                         GetSQLValueString($doa_bits[1], "text"),
                         GetSQLValueString($doa_bits[2], "text"),
                         GetSQLValueString($_POST['time3'], "text"),
                         GetSQLValueString($_POST['time4'], "text"),
                         GetSQLValueString($_POST['weather'], "text"),
                         GetSQLValueString($_POST['location'], "text"),
                         GetSQLValueString($_POST['policeDetail'], "text"),
                         GetSQLValueString($_POST['accidentDetail'], "text"),
                         GetSQLValueString($_POST['blame'], "text"),
                         GetSQLValueString($_POST['witnessDetail'], "text"),
                         GetSQLValueString($_POST['dName'], "text"),
                         GetSQLValueString($_POST['dAdd'], "text"),
                         GetSQLValueString($_POST['dvMake'], "text"),
                         GetSQLValueString($_POST['dvModel'], "text"),
                         GetSQLValueString($_POST['dReg'], "text"),
                         GetSQLValueString($_POST['dInsurance'], "text"),
                         GetSQLValueString($_POST['tName'], "text"),
                         GetSQLValueString($_POST['tAdd'], "text"),
                         GetSQLValueString($_POST['tvMake'], "text"),
                         GetSQLValueString($_POST['tvModel'], "text"),
                         GetSQLValueString($_POST['tReg'], "text"),
                         GetSQLValueString($_POST['tInsurance'], "text"),
                         GetSQLValueString($_POST['seatbelt'], "text"),
                         GetSQLValueString($_POST['injuries'], "text"),
                         GetSQLValueString($_POST['injuries2'], "text"),
                         GetSQLValueString($_POST['recover'], "text"),
                         GetSQLValueString($_POST['timeoff'], "text"),
                         GetSQLValueString($_POST['loss'], "text"),
                         GetSQLValueString($_POST['expenses'], "text"),
                         GetSQLValueString($_POST['sports'], "text"),
                         GetSQLValueString($_POST['hospital'], "text"),
                         GetSQLValueString($_POST['gpName'], "text"),
                         GetSQLValueString($_POST['gpAddress'], "text"),
                         GetSQLValueString($_POST['driverNo'], "text"));
  
    mysql_select_db($database_speedycms, $speedycms);
    $Result1 = mysql_query($updateSQL, $speedycms) or die(mysql_error());
  }
  
  mysql_select_db($database_speedycms, $speedycms);
  $query_accident = "SELECT * FROM tbl_personalinjury WHERE id=$client_id";
  $accident = mysql_query($query_accident, $speedycms) or die(mysql_error());
  $row_accident = mysql_fetch_assoc($accident);
  $totalRows_accident = mysql_num_rows($accident);
  </code></pre>
  
  <p>any suggestions? </p>