php cfoutput查询组

<?php
// 连接数据库
$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);
}

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

// 显示查询结果
if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "字段1: " . $row["字段1名称"]. " - 字段2: " . $row["字段2名称"]. "<br>";
    }
} else {
    echo "没有结果";
}

// 关闭连接
$conn->close();
?>