mysqli总行数

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 执行查询
$sql = "SELECT * FROM table_name";
$result = $conn->query($sql);

// 获取总行数
$total_rows = mysqli_num_rows($result);

echo "总行数: " . $total_rows;

// 关闭连接
$conn->close();

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 执行查询以获取总行数
$sql = "SELECT COUNT(*) as total_rows FROM table_name";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // 输出数据
    while($row = $result->fetch_assoc()) {
        echo "总行数: " . $row["total_rows"];
    }
} else {
    echo "0 结果";
}

// 关闭连接
$conn->close();