Insert Query Using PHP to MYSQL database part II

<?php

include_once('db.php');

$title    = $_POST['adtilte'];
$textarea = $_POST['textarea'];
$email  = $_POST['email'];
$pwsd  = $_POST['pswd'];

$intr = mysql_query("INSERT INTO main_contant ( title, disc, email, password,) VALUES('$title','$textarea','$email','$pwsd')");


?>

database

table name : main_contant

field
main_id  (int) primary key auto increment
title (varchar) 100
disc (varchar)250
email (varchar)25
password (varchar)25