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Use get_client_version with database write functions (such as mysqli_query)

gitbox 2025-05-11

When developing PHP applications, we sometimes want to record the version information of the client database library for debugging or generating logs. At this time, the get_client_version() function is very useful. It returns the version number of the MySQL client library currently used by PHP.

This article will introduce how to store the information obtained by get_client_version() into the database while performing database write operations (such as mysqli_query ).

1. Prepare the database environment

Suppose we have a database log_db and create a table called client_logs in it to record the client library version for each operation:

 CREATE DATABASE IF NOT EXISTS log_db;

USE log_db;

CREATE TABLE IF NOT EXISTS client_logs (
    id INT AUTO_INCREMENT PRIMARY KEY,
    client_version VARCHAR(50) NOT NULL,
    action VARCHAR(100),
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

2. PHP sample code

Here is a simple PHP example showing how to get the client version and insert it into the database:

 <?php
$host = 'localhost';
$user = 'your_db_user';
$password = 'your_db_password';
$database = 'log_db';

// Connect to the database
$conn = new mysqli($host, $user, $password, $database);

// Check the connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Get the client version
$clientVersion = mysqli_get_client_version(); // Or use get_client_version()，Consistent results

// Perform database write operations
$action = 'User login from https://gitbox.net/dashboard';
$sql = "INSERT INTO client_logs (client_version, action) VALUES ('$clientVersion', '$action')";

if ($conn->query($sql) === TRUE) {
    echo "Record insertion successfully";
} else {
    echo "An error occurred while inserting a record: " . $conn->error;
}

$conn->close();
?>

III. Explanation

  • mysqli_get_client_version() will return an integer version of the client, such as 50013 , representing 5.0.13 . You can convert it to a more readable format as you want.

  • In the example, the operation record is actually inserted through mysqli_query .

  • The URL example uses https://gitbox.net/dashboard and replaces the domain name as you request.

4. Best Practices

  • In actual projects, it is recommended to use prepared statements to prevent SQL injection.

  • If the recorded client information is used for security analysis, it is recommended to record IP address, User-Agent and other more information at the same time.

  • Log tables should be archived or cleaned regularly to avoid volume expansion affecting performance.

5. Summary

Using get_client_version() or mysqli_get_client_version() with database write operations not only allows developers to better understand the client environment during debugging, but also can be used to build audit logs, system compatibility analysis and other functions. With the examples in this article, you can easily integrate it into your system to improve system transparency and maintainability.

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