<?php
$host = localhost
$dbuser = user
$dbpass = pass
$dbname = user

$connection = mysql_connect($host,$dbuser,$dbpass);
$db = mysql_select_db($dbname,$connection);

$name = $_POST[username];
$pass = $_POST[password];
$pass_conf = $POST[pass_conf];
$email = $_POST[email];
$ip = $_POST[ip];

if($name == false || $pass == false || $pass_conf == false || $email == false){
echo "Please fill in all the required fields!";
};
if($pass != $pass_conf){
echo "Passwords do not match!";
} else {
$connection = mysql_connect($host,$dbuser,$dbpass);
$db = mysql_select_db($dbname,$connection);
$sql = "INSERT INTO user (username,password,email,ip) VALUES ($name, $pass, $email, $ip)";
$result = mysql_query($sql);
echo "Thank you for registering!";
};

?>