Untitled

<?php
	session_start();
	$action = $_GET['action'];
	if ($action) {
		if ($action == 'login') {
			if (empty($_POST['username']) || empty($_POST['password'])) {
				die('Username or password left blank!');
			} else {
				$_SESSION['LOGIN'] = TRUE;
				$_SESSION['USER'] = $_POST['username'];
				$_SESSION['PASS'] = $_POST['password'];
			}
		} elseif ($action == 'register') {
			if (empty($_POST['username']) || empty($_POST['password']) || empty($_POST['email'])) {
				die('Username, password, or e-mail left blank!');
			} else {
				$_SESSION['LOGIN'] = TRUE;
				$_SESSION['USER'] = $_POST['username'];
				$_SESSION['PASS'] = $_POST['password'];
				$_SESSION['EMAIL'] = $_POST['email'];
			}
		} elseif ($action == 'logout') {
			$_SESSION['LOGIN'] = FALSE;
			$_SESSION['USER'] = NULL;
			$_SESSION['PASS'] = NULL;
			$_SESSION['EMAIL'] = NULL;
			die('Successfully logged out! <a href="index.php">Back.</a>);')
		}
	}
?>
<html>
	<head>
		<title>Beluga Whale Exhibit</title>
	</head>
	<body>
		<h1 style="color:aqua;">The Beluga Whale Exhibit</h1>
		<?php if ($_SESSION['LOGIN'] == TRUE) { ?>
			<h2><b>Welcome back, <?php echo $_SESSION['USER']; ?></b></h2>
		<?php } ?>
		<p style="color:aqua;font-size:30px;">Special Access allowed to, Alexa Pedrero Barron, Ran Asher Peer, and Jack Thomas Holiman.<br>
		The star of this exhibit, Alexa, is known to be one of the first Beluga Whales. It is known that the whale is said to be 56,000 years old.<br>
			Wow! You learn something new every day :)<br></p>
		<p><a href="http://twitter.com/ale4175">Visit the whale's Twitter page! Or just click on the picture for a direct link!</a><br></p>
		<p><a href="http://twitter.com/JackHoliman">Visit Jack's Twitter page! Or just click on the picture for a direct link!</a><br></p>
		<p><a href="http://twitter.com/Ran_Peer">Visit Ran's Twitter page! Or just click on the picture for a direct link!</a><br></p>
	<style>
		.whales {
			display:inline;
				border:7px solid aqua;
		}

		.whales:hover {
			border:7px dotted red;
		}
	</style>
	<?php if ($_SESSION['LOGIN'] == TRUE) { ?><a href="http://twitter.com/ale4175"><?php } ?><img src="https://i.gyazo.com/cfed12973de79589ac2c6dd387212a51.png" class="whales" height="400px" width="400px"></a>
	<?php if ($_SESSION['LOGIN'] == TRUE) { ?><a href="https://twitter.com/bhambeluga"><?php } ?><img src="https://i.gyazo.com/7ebc2f68b5194ff9a91286073d2cb617.png" class="whales" height="400" width="400px"></a>
	<?php if ($_SESSION['LOGIN'] == TRUE) { ?><a href="http://twitter.com/JackHoliman"><?php } ?><img src="https://pbs.twimg.com/profile_images/739329178676273156/42bD_QZ7.jpg" class="whales" height="400px" width="400px"></a>
	<?php if ($_SESSION['LOGIN'] == TRUE) { ?><a href="http://twitter.com/Ran_Peer"><?php } ?><img src="https://pbs.twimg.com/profile_images/750178410123567104/Y9B3dcu5.jpg" class="whales" height="400px width=" 400px=""></a>
	<br><br>
	<?php if ($_SESSION['LOGIN'] == FALSE) { ?>
		<h2>Login to the beluga whale exhibit!</h2>
		<form action="?action=login" method="POST">
			<label for="username">Username : </label><input type="text" name="username"><br>
			<label for="password">Password : </label><input type="password" name="password"><br><br>
			<input type="submit" value="Login">
		</form>
	<?php } else { ?>
		<a href="?action=logout"><button>Logout</button></a>
	<?php } ?>
	</body>
</html>