if($_GET["сh"] == "a1"){
  header("Location:404.php");
  exit;
}
else{
  $_CITYKOEF_ = array(
    //$_GET['place'] => 'Price'
    "Moskva" =>"32",
  );
  $_PURPOSEKOEF_ = array(
    "GravityDrain" =>"20"
  );
  $_SUPPLYKOEF_ = array(
    "GravityDrain" =>"20"
  );
  $_WELDINGKOEF_= array(
    "GravityDrain" =>"20"
  );
$priceGBN = floatval(array($_GET["place"])) * $_CITYKOEF_['Moskva'] *  floatval(array($_GET["purpose"])) * $_PURPOSE_['GravityDrain']*$_GET["diameter"];
  $priceMaterials = floatval(array($_GET["place"])) * $_CITYKOEF_['Moskva'] *  floatval(array($_GET["purpose"])) * $_PURPOSE_['GravityDrain']*$_GET["diameter"]*$_GET["long"];
  $priceWelding = floatval(array($_GET["place"])) * $_CITYKOEF_['Moskva'] *  floatval(array($_GET["purpose"])) * $_PURPOSE_['GravityDrain']*$_GET["diameter"]*$_GET["long"];


  $mergedDate = array_merge($_GET,
    array("priceGBN"=>$priceGBN),
    array("priceMaterials" => $priceMaterials),
    array("priceWelding" =>$priceWelding),
    array("date" => $_GET['ch'])
  );

  $_SESSION['gbnDate'] = $mergedDate;
  $message = "Цена ГБН{$priceGBN},Цена материалов{$priceMaterials},Цена сварки{$priceWelding}, Email заказчика - {$email}";
  mail($recepient,'subject', $message, "Content-type: text/plain; charset=\"utf-8\"\n From: $recepient");

  header("Location: price.php");
  exit;
}