要使用PHP和MySQL類操作數據庫表，首先確保已經安裝了MySQL服務器和PHP的MySQL擴展（如MySQLi或PDO）。以下是使用MySQLi擴展操作數據庫表的示例步驟：

1. 連接到MySQL數據庫服務器：

$servername = "localhost"; // 服務器地址
$username = "your_username"; // 用戶名
$password = "your_password"; // 密碼
$dbname = "your_database"; // 數據庫名

// 創建連接
$conn = new mysqli($servername, $username, $password, $dbname);

// 檢查連接
if ($conn->connect_error) {
    die("連接失敗: " . $conn->connect_error);
}
echo "連接成功";

2. 創建數據表：

$sql = "CREATE TABLE users (
    id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(30) NOT NULL,
    email VARCHAR(50) NOT NULL,
    password VARCHAR(255) NOT NULL
)";

if ($conn->query($sql) === TRUE) {
    echo "數據表創建成功";
} else {
    echo "創建數據表錯誤: " . $conn->error;
}

3. 插入數據：

$username = "testuser";
$email = "testuser@example.com";
$password = password_hash("testpassword", PASSWORD_DEFAULT);

$sql = "INSERT INTO users (username, email, password) VALUES (?, ?, ?)";

$stmt = $conn->prepare($sql);
$stmt->bind_param("sss", $username, $email, $password);

if ($stmt->execute() === TRUE) {
    echo "新記錄插入成功";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

$stmt->close();

4. 查詢數據：

$sql = "SELECT id, username, email, password FROM users";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // 輸出每行數據
    while($row = $result->fetch_assoc()) {
        echo "id: " . $row["id"]. " - Name: " . $row["username"]. " - Email: " . $row["email"]. " - Password: " . $row["password"]. "<br>";
    }
} else {
    echo "0 結果";
}
$result->free();

5. 更新數據：

$id = 1;
$new_username = "updated_username";
$new_email = "updated_email@example.com";

$sql = "UPDATE users SET username = ?, email = ? WHERE id = ?";

$stmt = $conn->prepare($sql);
$stmt->bind_param("sss", $new_username, $new_email, $id);

if ($stmt->execute() === TRUE) {
    echo "記錄更新成功";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

$stmt->close();

6. 刪除數據：

$id = 1;

$sql = "DELETE FROM users WHERE id = ?";

$stmt = $conn->prepare($sql);
$stmt->bind_param("i", $id);

if ($stmt->execute() === TRUE) {
    echo "記錄刪除成功";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

$stmt->close();

7. 關閉數據庫連接：

$conn->close();

請注意，這只是一個簡單的示例。在實際項目中，建議使用PHP框架（如Laravel或Symfony）和ORM（對象關系映射）庫來操作數據庫表，以提高代碼的可維護性和安全性。