jkuip · October 20, 2015 19:50
diff --git a/poll.php b/poll.php
 <!DOCTYPE html>
 <html>
 	<head>
 		<title>Simple Poll</title>
 		<style type="text/css">
 			.outer {
 				width: 300px;
 				height: 10px;
 				border: 1px solid #000;
 				background-color: #fff;
 			}
 			.inner {
 				height: 10px;
 				background-color: #690;
 			}
 		</style>
 	</head>
 	<body>
 		
 		
 		<?php

 			// suppress error notices
 			error_reporting(E_ALL & ~E_NOTICE);

 			// database credentials
 			$db_user = 'root';
 			$db_password = '';
 			$db_host = 'localhost';
 			$db_name = 'dw';

 			// connect to database
 			$db = mysqli_connect ($db_host, $db_user, $db_password, $db_name) OR die ('Could not connect to MySQL: ' . mysqli_connect_error());

 			// has a vote occurred?
 			if(isset($_POST['submit']))
 			{
 				$error = array();
 				
 				// let's make sure they voted
 			 	if(empty($_POST['nextpresident']))
 				{
 					$error['vote'] = 'You must vote. It is part of your civic responsibility.';	
 				}
 				
 				// if no errors
 				if(sizeof($error) == 0)
 				{
 					// insert the vote
 					$sql = "INSERT INTO poll (
 								vote_id, 
 								vote
 							) VALUES (
 								null, 
 								'{$_POST['nextpresident']}'
 							)";
 					mysqli_query($db, $sql);
 					
 					// how many votes for trump?
 					$sql = "SELECT COUNT(*) AS numvotes FROM poll WHERE vote = 'Trump'";
 					$result = mysqli_query($db, $sql);
 					$row = mysqli_fetch_assoc($result);
 					$numtrump = $row['numvotes'];
 					
 					// how many votes for bernie?
 					$sql = "SELECT COUNT(*) AS numvotes FROM poll WHERE vote = 'Bernie'";
 					$result = mysqli_query($db, $sql);
 					$row = mysqli_fetch_assoc($result);
 					$numbernie = $row['numvotes'];
 					
 					
 					// how many votes for hillary?
 					$sql = "SELECT COUNT(*) AS numvotes FROM poll WHERE vote = 'Hillary'";
 					$result = mysqli_query($db, $sql);
 					$row = mysqli_fetch_assoc($result);
 					$numhillary = $row['numvotes'];
 					
 					// display raw number of votes
 					echo "<p>Trump: {$numtrump}</p>";
 					echo "<p>Bernie: {$numbernie}</p>";
 					echo "<p>Hillary: {$numhillary}</p>";
 					
 					// get the total number of votes
 					$total = $numtrump + $numbernie + $numhillary;
 					
 					// calculate the percentages for each candidate
 					$percentagetrump = ($numtrump / $total) * 100;
 					$percentagebernie = ($numbernie / $total) * 100;
 					$percentagehillary = ($numhillary / $total) * 100;
 					
 					// display the percentages as text
 					echo "<p>Trump: {$percentagetrump}%</p>";
 					echo "<p>Bernie: {$percentagebernie}%</p>";
 					echo "<p>Hillary: {$percentagehillary}%</p>";
 					// display the percentages as bar graphs
 					echo "<h1>Trump</h1>";
 					echo "<div class=\"outer\">";
 					echo "<div class=\"inner\" style=\"width: {$percentagetrump}%\"></div>";
 					echo "</div>";
 					
 					echo "<h1>Bernie</h1>";
 					echo "<div class=\"outer\">";
 					echo "<div class=\"inner\" style=\"width: {$percentagebernie}%\"></div>";
 					echo "</div>";
 					
 					echo "<h1>Hillary</h1>";
 					echo "<div class=\"outer\">";
 					echo "<div class=\"inner\" style=\"width: {$percentagehillary}%\"></div>";
 					echo "</div>";	
 				}	
 			}
 		?>
 		
 		<?php

 			// display error if necessary
 			if($error['vote'])
 			{
 				echo $error['vote'];	
 			}
 		?>
 		
 		<form method="post" action="poll.php">
 			<label>Who is going to be the next president?</label><br />
 			<input name="nextpresident" type="radio" value="Trump" />Trump<br />
 			<input name="nextpresident" type="radio" value="Bernie" />Bernie<br />
 			<input name="nextpresident" type="radio" value="Hillary" />Hillary<br />
 			<input name="submit" type="submit" value="Vote" />
 		</form>
 		
 	</body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>Simple Poll</title>
	<style type="text/css">
	.outer {
	width: 300px;
	height: 10px;
	border: 1px solid #000;
	background-color: #fff;
	}
	.inner {
	height: 10px;
	background-color: #690;
	}
	</style>
	</head>
	<body>


	<?php

	// suppress error notices
	error_reporting(E_ALL & ~E_NOTICE);

	// database credentials
	$db_user = 'root';
	$db_password = '';
	$db_host = 'localhost';
	$db_name = 'dw';

	// connect to database
	$db = mysqli_connect ($db_host, $db_user, $db_password, $db_name) OR die ('Could not connect to MySQL: ' . mysqli_connect_error());

	// has a vote occurred?
	if(isset($_POST['submit']))
	{
	$error = array();

	// let's make sure they voted
	if(empty($_POST['nextpresident']))
	{
	$error['vote'] = 'You must vote. It is part of your civic responsibility.';
	}

	// if no errors
	if(sizeof($error) == 0)
	{
	// insert the vote
	$sql = "INSERT INTO poll (
	vote_id,
	vote
	) VALUES (
	null,
	'{$_POST['nextpresident']}'
	)";
	mysqli_query($db, $sql);

	// how many votes for trump?
	$sql = "SELECT COUNT(*) AS numvotes FROM poll WHERE vote = 'Trump'";
	$result = mysqli_query($db, $sql);
	$row = mysqli_fetch_assoc($result);
	$numtrump = $row['numvotes'];

	// how many votes for bernie?
	$sql = "SELECT COUNT(*) AS numvotes FROM poll WHERE vote = 'Bernie'";
	$result = mysqli_query($db, $sql);
	$row = mysqli_fetch_assoc($result);
	$numbernie = $row['numvotes'];


	// how many votes for hillary?
	$sql = "SELECT COUNT(*) AS numvotes FROM poll WHERE vote = 'Hillary'";
	$result = mysqli_query($db, $sql);
	$row = mysqli_fetch_assoc($result);
	$numhillary = $row['numvotes'];

	// display raw number of votes
	echo "<p>Trump: {$numtrump}</p>";
	echo "<p>Bernie: {$numbernie}</p>";
	echo "<p>Hillary: {$numhillary}</p>";

	// get the total number of votes
	$total = $numtrump + $numbernie + $numhillary;

	// calculate the percentages for each candidate
	$percentagetrump = ($numtrump / $total) * 100;
	$percentagebernie = ($numbernie / $total) * 100;
	$percentagehillary = ($numhillary / $total) * 100;

	// display the percentages as text
	echo "<p>Trump: {$percentagetrump}%</p>";
	echo "<p>Bernie: {$percentagebernie}%</p>";
	echo "<p>Hillary: {$percentagehillary}%</p>";
	// display the percentages as bar graphs
	echo "<h1>Trump</h1>";
	echo "<div class=\"outer\">";
	echo "<div class=\"inner\" style=\"width: {$percentagetrump}%\"></div>";
	echo "</div>";

	echo "<h1>Bernie</h1>";
	echo "<div class=\"outer\">";
	echo "<div class=\"inner\" style=\"width: {$percentagebernie}%\"></div>";
	echo "</div>";

	echo "<h1>Hillary</h1>";
	echo "<div class=\"outer\">";
	echo "<div class=\"inner\" style=\"width: {$percentagehillary}%\"></div>";
	echo "</div>";
	}
	}
	?>

	<?php

	// display error if necessary
	if($error['vote'])
	{
	echo $error['vote'];
	}
	?>

	<form method="post" action="poll.php">
	<label>Who is going to be the next president?</label><br />
	<input name="nextpresident" type="radio" value="Trump" />Trump<br />
	<input name="nextpresident" type="radio" value="Bernie" />Bernie<br />
	<input name="nextpresident" type="radio" value="Hillary" />Hillary<br />
	<input name="submit" type="submit" value="Vote" />
	</form>

	</body>
	</html>