如何从 mysql 中获取类别到 ul？

Question

我有一个 mysql 数据库。我的文章在 Db 中有类别。我想获取这些类别并将它们显示为列表（侧面导航）。我能够建立连接并打印类别，但无法将它们放入列表中。

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

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
$conn->set_charset("utf8");

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
} 
echo "Connected successfully <br>";
$sql = "SELECT ID, NAME FROM categs";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // output data of each row
    while($row = $result->fetch_assoc()) {
        echo "ID: " . $row["ID"]. " " . "Name: " . $row["NAME"]. "<br>";
    }
} else {
    echo "0 results";
}
$conn->close();    

?>

我知道这是一个愚蠢的问题，但我是 PHP 新手。

<ul>
    <li>Categ 1</li>
    <li>Categ 2</li>
    <li>Categ 3</li>
</ul>

提前致谢。

Answer 1

替换

echo "ID: " . $row["ID"]. " " . "Name: " . $row["NAME"]. "<br>";

和

echo "<li>" . $row["NAME"]. "</li>";

Answer 2

你差一点就自己搞定了...试试这个：

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

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
$conn->set_charset("utf8");

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
} 
echo "Connected successfully <br>";
$sql = "SELECT ID, NAME FROM categs";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    echo "<ul>";
    while($row = $result->fetch_assoc()) {
        echo "<li>" .$row["NAME"]. "</li>";
    }
    echo "</ul>";
} else {
    echo "0 results";
}
$conn->close();    

?>

如何从 mysql 中获取类别到 ul？

How to fetch categories from mysql into ul?

php

mysql

database

fetch