Untitled

<html>
<?php
$a=$_post['name'];
$b=$_post['passwd'];
$dbhost="localhost";
$db="mysql";
$dbuser="root";
$dbpassword="";
$con=mysql_connect("localhost","root","");
mysql_select_db($db);
$sql="insert into demo1(name,password),values('$a' , '$b')";
$res=mysql_query($sql);
if(!res)
{
die(mysql_error());
}
else
{
$s="select *form user where name='$a' ";
$res=mysql_query($s);
while($r=mysql_fetch_array($res))
{
echo "name" .$r[0] ."<br/>";
}
}
mysql_close($con);
?>
<head>
<title>
php
</title>
</head>
<body>
<form method="post" action="">
name:
<input type="text" name="name" /> <br/>
passwd:
<input type="password" name="password" /> <br/>
<input type="submit" name="submit">
</body>
</html>