<?php
$conn = mysqli_connect("localhost", "root", "111111");
mysqli_select_db($conn, "database_name");
$result = mysqli_query($conn, "SELECT * FROM table_name");
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<link rel="stylesheet" href="http://localhost/project_php/style.css" />
<title>PHP Project</title>
</head>
<body id="target">
<header>
<h1>
<a href="http://localhost/project_php/index.php">JavaScript</a>
</h1>
</header>
<nav>
<ul>
<?php
while ($row = mysqli_fetch_assoc($result)) {
echo "<li><a href='http://localhost/index.php?id=" . $row['id'] . "'>" . $row['title'] . "</a></li>" . "\n";
}
?>
</ul>
</nav>
<div>
<input type="button" value="white" onclick="document.getElementById('target').className='white'" />
<input type="button" value="black" onclick="document.getElementById('target').className='black'" />
</div>
<article>
<?php
if (empty($_GET['id']) === false) {
$sql = "SELECT * FROM table_name WHERE id=" . $_GET['id'];
$result = mysqli_query($conn, $sql);
$row = mysqli_fetch_assoc($result);
echo '<h2>' . $row['title'] . '</h2>';
echo $row['description'];
}
?>
</article>
</body>
</html>