Using the mysqli extension: Connect to the database and execute queries using the mysqli_connect() function.
Utilize the PDO extension: Connect to and query databases using PDO, which supports various types of databases.
Using the MySQLi object: Connecting to the database using the MySQLi class allows you to execute prepared statements and transactions.
Using MySQL functions to connect to the database is not recommended because it is not secure or reliable enough.
Utilizing Framework Encapsulation: Utilizing popular PHP frameworks such as Laravel and Symfony provides encapsulation methods for database connection and operations, simplifying processes and enhancing security.
