function database_user_login($username, $password)
{
global $mysqli;
$username = sanitize_input($username);
$password = sanitize_input($password);
$userID = database_get_userID($username);
$q = "SELECT password FROM users WHERE userID='{$userID}'";
$result = mysqli_query($mysqli, $q);
$row = mysqli_fetch_array($result);
$datapass = $row['password'];
// If the database password and the passed in password are the same
// the user is verified. Otherwise, return 0.
if (validate_password($password, $datapass)) {
set_user_logged_in($userID);
} else {
set_user_logged_out();
$userID = 0;
}
return $userID;
}
<?php
include "database_queries.php";
if (!empty($_GET["logout"])) {
set_user_logged_out();
$userID = 0;
} else {
$userID = get_user_logged_in();
}
?>
<!-- This is the start of the MySocial HTML code for every page-->
<html>
<head>
<link href='http://fonts.googleapis.com/css?family=Just+Another+Hand' rel='stylesheet' type='text/css'>
<link rel="stylesheet" type="text/css" href="style.css" />
<title>Welcome to Connect+</title>
</head>
<body>
<div id = "topcontainer">
<div id = "header" style="padding-top:2%">
<a href = "index.php">Connect+</a>
<!-- NOTE: here you can modify the header text of this website. Perhaps, add an image -->
<div id = "navigation">
<?php
