MySQL database migration refers to the process of migrating data and structures in one database to another database. In actual projects, you may encounter situations where you need to migrate the database to a new server, upgrade the database version, merge multiple databases, etc. The following will introduce how to migrate MySQL database and provide specific code examples.
mysqldump -u 用户名 -p 密码 数据库名 > 数据库名.sql
mysql -u 用户名 -p 密码 目标数据库名 < 数据库名.sql
$host = "目标数据库的主机名"; $username = "目标数据库的用户名"; $password = "目标数据库的密码"; $database = "目标数据库名"; $conn = new mysqli($host, $username, $password, $database);
Note: Depending on the actual project situation, sometimes it is necessary to modify the character set and port of the database and other parameters.
$conn = new mysqli($host, $username, $password, $database); if ($conn->connect_error) { die("Connection failed: " . $conn->connect_error); } echo "Connected successfully!";
By running the above code, if "Connected successfully!" is displayed in the browser, it means the connection is normal.
In summary, the above are the steps for MySQL database migration and related code examples. When performing actual database migration, these steps and codes can be flexibly used according to the specific situation, or combined with other tools and methods for migration.
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