什么是使用php获取mysql表中记录总数的最佳方法？

$dsn = 'mysql:host=localhost;dbname=your_database';
$username = 'your_username';
$password = 'your_password';
$pdo = new PDO($dsn, $username, $password);
$stmt = $pdo->query('SELECT COUNT(*) FROM your_table_name');
$rows = $stmt->fetch(PDO::FETCH_ASSOC);
echo $rows['COUNT(*)']; // 获取记录总数

$servername = "localhost";
$username = "your_username";
$password = "your_password";
$database = "your_database";

// Create connection
$conn = new mysqli($servername, $username, $password, $database);

// Check connection
if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
}

// 执行 COUNT(*) 查询
$sql = "SELECT COUNT(*) FROM your_table_name";
$result = $conn->query($sql);
$rowcount = $result->num_rows;

// 统计记录总数
echo "记录总数：{$rowcount}\n";

// Close connection
$conn->close();