The code used for index.php is below:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="../styles.css">
<title>Checkboxes</title>
</head>
<body>
<?php
$message = '';
$color = '';
$submit = $_GET['submit'];
if(isset($submit)){
// echo print_r($_GET);
if(array_key_exists('agree', $_GET)){
$color = "background-color: green;";
$message = "Checkbox was checked. You have agreed to our terms. You are severely fucked!";
} else {
$color = "background-color: darkred;";
$message = "Checkbox is not checked. You have to agree or you will be punished severely.";
}
}
?>
<h2>Click Here to Agree to Our Terms</h2>
<form action="index.php" method="GET">
<p><input type="checkbox" name="agree" id="agree">I agree to the terms</p>
<br>
<input type="submit" value="Submit" name="submit">
</form>
<h3 class="message" style="<?php echo $color; ?>"><?php echo $message; ?></h3>
<hr>
<?php
include('../show_code.php');
show_code('index.php');
show_code('process.php');
?>
</body>
</html>