INSERT ข้อมูลลง DB ไม่ได้ ไม่ทราบเกิดจากอะไรครับ ช่วยดูให้ที มีนไปหมดละ

<?
$hostname = "127.0.0.1";
$username="root";
$password="password";
$dbname = "appointment"; 
$dblogin = "appointment"; 
$connection=mysql_connect($hostname,$username,$password) or die("ติดต่อฐานข้อมูลไม่ได้");
$db=mysql_select_db($dbname,$connection) or die("ไม่สามารถเลือกฐานข้อมูลได้");
mysql_query("SET CHARACTER SET utf8");
mysql_query("SET collation_connection = ’utf8_thai_ci’ ");


?>

<?php
ob_start();
include('config.php');

$username=$_POST['username'];
$password=$_POST['password'];
$email=$_POST['email'];

$firstname=$_POST['firstname'];
$lastname=$_POST['lastname'];
$day=$_POST['day'];
$month=$_POST['month'];
$year=$_POST['year'];
$gender=$_POST['radio'];
$address=$_POST['address'];
$province=$_POST['province'];
$zipcode=$_POST['zipcode'];
$position=$_POST['position'];
$hobby=$_POST['hobby'];
$date=$_POST['date'];

$birthday=$year."-".$month."-".$day;

$sql="SELECT custUsername FROM customer WHERE custUsername='$username' ";
	$numrow=mysql_db_query($dbname,$sql);
	$total=mysql_num_rows($numrow);
		
		if($total==0)
			{
				$sql1="INSERT INTO customer ( custDate,custUsername,custPassword,custEmail,custFirstname,custLastname,custBirthday,custGender,custAddress,custProvince,custZipcode,custPosition,custHobby) values ( '$date','$username','$password','$email','$firstname','$lastname','$birthday','$gender','$address','$province','$zipcode','$position','$hobby') ";
				$numrow1=mysql_db_query($dbname,$sql1)or die("ติดต่อไม่ได้");		
				header('Location: index.php');
				mysql_close();

				
			}
		else if($total>=1)
			{
				echo"<script type='text/javascript' language='javascript'>
						alert('Username นี้มีคนใช้งานแล้วค่ะ');
						history.back();
						</script>";
				mysql_close();
			}
		else{}



					
					
				
						
?>