看我这小段验证代码为什么不成功?

[懒得去死]

[david@ns2 www]$ cat login1.php
<?php
$host="192.168.0.30";
$username="root";
$password="******";
$name=$_post['name'];
$password=$_post['pass'];
$db=mysql_connect($host,$username,$password) or die ("Unable to connect!");
mysql_select_db("sitna") or die ("Unable to select databases!");
$query="SELECT * FROM user where name='$name' and password=sha1('$pass')";
$result=mysql_query($query);
if ($myrow = mysql_fetch_row($result))
{
session_start();
if (!session_is_registered("user"))
{
echo "Register sucessful!"
}
else
{
echo"Register failed ,you're not allowed to login!";
}
}
?>

[leyan728]

$password="******";
$name=$_post['name'];
$password=$_post['pass'];
---------------------
mysql_connect($host,$username,$password)
---------------------------
where name='$name' and password=sha1('$pass')";

你的password 和 pass 到底那个是那个呀?