Why can't entry database mysql from new registration?

[bakul]

My php process file is


<?php
if (isset($_POST['submit'])) {
$userName = $_POST["username"];
$fullName = $_POST["fullname"];
$email = $_POST["email"];
$password = $_POST["password"];
$con = mysql_connect("localhost", "root", "");
if (!$con) {
die('could not connect:' . mysql_error());
}
mysql_select_db("alhera", $con);

mysql_query("INSERT INTO form('user name', 'full name', 'e-mail', 'password') VALUES('$userName','$fullName','$email','$password')");
echo "Your record successfully added";
mysql_select_db("alhera", $con);

$result=mysql_query("SELECT*FROM form");

echo"<table border='1'>
<tr>
<th>user name</th>
<th>full name</th>
</tr>";

while($row=mysql_fetch_array($result))
{
echo"<tr>";
echo"<td>" .$row['user name']. "</td>";
echo"<td>" .$row['full name']. "</td>";
echo"</tr>";
}
echo"</table>";

mysql_close($con);
}
?>



And

Local host table is

	1	user name	varchar(15)	latin1_swedish_ci		No	None		Change	Drop	More
	2	full name	varchar(15)	latin1_swedish_ci		No	None		Change	Drop	More
	3	e-mail	varchar(25)	latin1_swedish_ci		No	None		Change	Drop	More
	4	password	varchar(15)	latin1_swedish_ci		No	None		Change	Drop	more

Please Help me to solution