How to read database in html-HTML Tutorial-php.cn

How to read database in html

下次还敢

Release： 2024-04-11 09:28:46

Original

1430 people have browsed it

Answer: The database cannot be read using HTML itself, and a back-end programming language is required. Steps: Connect to the database. Execute queries to get data. Process query results. Display the fetched data in HTML.

How to read database in html

Reading the database using HTML

HTML (Hypertext Markup Language) itself cannot interact directly with the database. To implement database operations in HTML, you need to use a back-end programming language, such as PHP, Python, or Java, and embed these back-end scripts in HTML.

The following is how to use HTML with a back-end language to read the database:

1. Connect to the database

Use mysqli_connect in PHP () Function establishes a connection with the database.

2. Execute the query

Use the mysqli_query() function to execute the SQL query to obtain the data.

3. Processing results

Use the mysqli_fetch_array() or mysqli_fetch_assoc() function to obtain data rows from the query results .

4. Display data in HTML

Use HTML elements (such as tables, lists, or paragraphs) to display data obtained from the database in an HTML document.

Code sample (PHP):

<code class="html"><!DOCTYPE html>
<html>
<body>

<?php
// 连接到数据库
$conn = mysqli_connect("localhost", "username", "password", "database");

// 执行查询
$result = mysqli_query($conn, "SELECT * FROM users");

// 获取数据行
while ($row = mysqli_fetch_assoc($result)) {
  // 在 HTML 中显示数据
  echo "<p><b>用户名：</b> " . $row['username'] . "</p>";
  echo "<p><b>电子邮件：</b> " . $row['email'] . "</p>";
}

// 关闭数据库连接
mysqli_close($conn);
?>

</body>
</html></code>

Copy after login

Additional information:

##mysqli# for PHP ## The module provides functions for interacting with the MySQL database. Other backend languages also provide libraries for interacting with various databases.
Ensure database connections and queries are executed on the HTML server side.

The above is the detailed content of How to read database in html. For more information, please follow other related articles on the PHP Chinese website!