似乎很直截了当，我是不是遗漏了什么？

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
} 

$sql = "SELECT id, firstname, lastname FROM MyGuests";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // output data of each row
    while($row = $result->fetch_assoc()) {
        //THIS SHOULD ECHO THE HTML TO THE PAGE BEFORE IT IS RETURNED TO THE CLIENT
        echo $row['html'];
    }
} else {
    echo "0 results";
}
$conn->close();
?>

再说一次，如果内容是动态的，我不确定这是最好的架构还是最好的扩展。