如何统计行、列的数量MySQL & PHP

SELECT COUNT(*) FROM 表名;

<?php
// 连接到MySQL数据库
$servername = "数据库服务器地址";
$username = "用户名";
$password = "密码";
$dbname = "数据库名";

$conn = new mysqli($servername, $username, $password, $dbname);

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

// 查询表的结构信息
$sql = "DESCRIBE 表名";
$result = $conn->query($sql);

// 统计列的数量
$columnCount = $result->num_rows;

echo "列的数量: " . $columnCount;

// 关闭数据库连接
$conn->close();
?>