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With the popularity of WeChat mini programs, more and more developers are beginning to pay attention to how to implement the comment and reply functions in mini programs. This article will introduce how to use PHP language to implement the comment and reply functions in WeChat applet.
1. Comment and reply functions of WeChat Mini Program
As a lightweight application, WeChat Mini Program provides users with rich information services and social functions. Among them, comments and replies are a very important part of user interaction. The comment and reply functions in the mini program not only allow users to communicate with each other, but also provide more content and interaction for the mini program.
The comment and reply functions in the WeChat mini program mainly include the following two parts:
2. Use PHP to implement the comment and reply functions of the WeChat applet
In order to implement the comment and reply functions of the WeChat applet, we need to use PHP language for development. Specific steps As follows:
First, we need to create a MySQL database to store comment and reply data. Databases can be created using phpMyAdmin and similar tools.
Create two tables in the database: comments and replies. Among them, the comments table is used to store comment data, including comment number, user nickname, comment content, comment time, etc.; the replies table is used to store reply data, including reply number, comment number, replying user nickname, replied user nickname, and reply content. , response time, etc.
Next, we need to write PHP code to complete the comment and reply functions. Specifically divided into the following steps:
(1) Connect to the database
Use PHP’s mysqli library to connect to the MySQL database, the code is as follows:
$servername = "localhost"; $username = "username"; $password = "password"; $dbname = "myDB"; $conn = mysqli_connect($servername, $username, $password, $dbname); if (!$conn) { die("Connection failed: " . mysqli_connect_error()); }
(2) Add a comment
Insert the user's comment data into the comments table, the code is as follows:
$sql = "INSERT INTO comments (username, content, time) VALUES ('$username', '$content', '$time')"; if (mysqli_query($conn, $sql)) { echo "New comment created successfully"; } else { echo "Error: " . $sql . "<br>" . mysqli_error($conn); }
(3) Get the comment list
Get all comment data from the comments table, and press Sort in reverse order of time, the code is as follows:
$sql = "SELECT * FROM comments ORDER BY time DESC"; $result = mysqli_query($conn, $sql); if (mysqli_num_rows($result) > 0) { while($row = mysqli_fetch_assoc($result)) { // 输出评论信息 } } else { echo "No comments yet"; }
(4) Add reply
Insert the user's reply data into the replies table, the code is as follows:
$sql = "INSERT INTO replies (comment_id, username, replyto, content, time) VALUES ('$comment_id', '$username', '$replyto', '$content', '$time')"; if (mysqli_query($conn, $sql)) { echo "New reply created successfully"; } else { echo "Error: " . $sql . "<br>" . mysqli_error($conn); }
(5) Get Reply list
Get all the reply data of the comments from the replies table and sort them in chronological order. The code is as follows:
$sql = "SELECT * FROM replies WHERE comment_id='$comment_id' ORDER BY time ASC"; $result = mysqli_query($conn, $sql); if (mysqli_num_rows($result) > 0) { while($row = mysqli_fetch_assoc($result)) { // 输出回复信息 } } else { echo "No replies yet"; }
The above are the steps to use PHP to implement the comment and reply functions of the WeChat applet.
3. Summary
The comment and reply functions of the WeChat mini program are an essential part of the mini program, providing users with rich communication and content-rich services. This article introduces how to use PHP language to implement the comment and reply functions of WeChat applet. I hope it will be helpful to developers.
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