Discuz database location query skills sharing

Forum is one of the most common website forms on the Internet. It provides users with a platform to share information, exchange and discuss. Discuz is a commonly used forum program, and I believe many webmasters are already very familiar with it. During the development and management of the Discuz forum, it is often necessary to query the data in the database for analysis or processing. In this article, we will share some tips for querying the location of the Discuz database and provide specific code examples.

First of all, we need to understand the database structure of Discuz. Generally speaking, Discuz's database contains many tables, such as user table, post table, forum table, etc. These tables store different types of data in the forum. To find the location of the Discuz database, we can find the database connection information through the Discuz configuration file. Generally speaking, Discuz's configuration file is located in the config/config_global.php file in the root directory of the website.

Open the config_global.php file, we can see database connection information similar to the following:

$_config['db'][1]['dbhost'] = 'localhost'; // 数据库主机地址
$_config['db'][1]['dbuser'] = 'username'; // 数据库用户名
$_config['db'][1]['dbpw'] = 'password'; // 数据库密码
$_config['db'][1]['dbname'] = 'discuz'; // 数据库名称
$_config['db'][1]['tablepre'] = 'pre_'; // 数据库表前缀

Through this information, we can know that the database location of Discuz is on the local host, and the database user name is ' username', the password is 'password', and the database name is 'discuz'. In addition, you can also see that the prefix of the tables in the database is 'pre_'. With this information, we can connect to Discuz's database for query operations.

The following is a sample code to query all user information in the Discuz user table:

<?php
$db = new mysqli('localhost', 'username', 'password', 'discuz');
if ($db->connect_error) {
    die('数据库连接失败：' . $db->connect_error);
}

$db->set_charset('utf8');

$query = "SELECT * FROM pre_ucenter_members";
$result = $db->query($query);

if ($result->num_rows > 0) {
    while ($row = $result->fetch_assoc()) {
        echo "用户名：" . $row['username'] . "，邮箱：" . $row['email'] . "<br>";
    }
} else {
    echo "数据库中没有用户信息。";
}

$db->close();
?>

In this code, we first create a mysqli database connection and specify the host address and user name, password and database name. Then query all user information in the user table through the SQL query statement SELECT * FROM pre_ucenter_members, and output the user name and email information line by line.

In addition to querying the user table, we can also query data from other tables as needed. We only need to modify the SQL query statement. In practical applications, corresponding query codes can be written according to specific situations in order to obtain the required data.

In general, by finding the Discuz configuration file and using the relevant query code, we can easily query the data in the Discuz database, which facilitates the management and development of the forum. I hope that the techniques introduced in this article will be helpful to you, and that you can use them flexibly to play a greater role.

The above is the detailed content of Discuz database location query skills sharing. For more information, please follow other related articles on the PHP Chinese website!