PHP を使用して、ナレッジ Q&A Web サイトの質問チャネルとトピック機能を開発します。

CREATE TABLE questions (
  id INT AUTO_INCREMENT PRIMARY KEY,
  title VARCHAR(255) NOT NULL,
  content TEXT NOT NULL,
  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
  updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);

CREATE TABLE topics (
  id INT AUTO_INCREMENT PRIMARY KEY,
  name VARCHAR(100) NOT NULL,
  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
  updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);

setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

// 查询问题列表
$query = "SELECT * FROM questions ORDER BY created_at DESC";
$stmt = $conn->prepare($query);
$stmt->execute();
$questions = $stmt->fetchAll(PDO::FETCH_ASSOC);

// 显示问题列表
foreach ($questions as $question) {
    echo "
{$question['title']}
";
    echo "
{$question['content']}
";
    echo "
发布时间：{$question['created_at']}
";
}
?>

prepare($query);
    $stmt->bindParam(':name', $name);
    $stmt->execute();
}

// 查询专题列表
$query = "SELECT * FROM topics ORDER BY created_at DESC";
$stmt = $conn->prepare($query);
$stmt->execute();
$topics = $stmt->fetchAll(PDO::FETCH_ASSOC);

// 显示专题列表
foreach ($topics as $topic) {
    echo "
{$topic['name']}
";
    echo "编辑 ";
    echo "删除";
}

// 创建专题表单
echo "
";
echo "";
echo "";
echo "
";
?>