ขึ้นแบบนี้ค่ะ You have an error in your SQL syntax; check the manual that corresponds to your

<?php 

require_once('Connections/AddDataCustomers.php');

 ?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  if (PHP_VERSION < 6) {
    $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
  }

  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}

$editFormAction = $_SERVER['PHP_SELF'];
if (isset($_SERVER['QUERY_STRING'])) {
  $editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);
}

if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "form1")) {
  $insertSQL = sprintf("INSERT INTO data_customers (ctm_name, ctm_surname, ctm_product, ctm_model, ctm_tel, ctm_date, ctm_fix, ) VALUES (%s, %s, %s, %s, %s, %s, %s,)",
                       GetSQLValueString($_POST['ctm_name'], "text"),
                       GetSQLValueString($_POST['ctm_surname'], "text"),
                       GetSQLValueString($_POST['ctm_product'], "text"),
			           GetSQLValueString($_POST['ctm_model'], "text"),
                       GetSQLValueString($_POST['ctm_tel'], "int"),
                       GetSQLValueString($_POST['ctm_date'], "date"),
                       GetSQLValueString($_POST['ctm_fix'], "text"));
                   


mysql_select_db($database_AddDataCustomers, $AddDataCustomers);
  $Result1 = mysql_query($insertSQL, $AddDataCustomers) or die(mysql_error());
  


  $insertGoTo = "data_customers.php";
  if (isset($_SERVER['QUERY_STRING'])) {
    $insertGoTo .= (strpos($insertGoTo, '?')) ? "&" : "?";
    $insertGoTo .= $_SERVER['QUERY_STRING'];
  }
  header(sprintf("Location: %s", $insertGoTo));
}
?>