function addPrefix($prefix, $db) { // Fetch all table names from the database $query = $db->query("SHOW TABLES"); $tables = $query->fetchAll(PDO::FETCH_COLUMN); // Loop through each table and rename it with the prefix foreach ($tables as $table) { $newTableName = $prefix . $table; $db->query("RENAME TABLE $table TO $newTableName"); } }In this example, we're using PHP's PDO library to interact with a MySQL database. The addPrefix function takes the prefix (e.g. "myPrefix_") and the database connection as parameters. It then loops through all tables in the database and renames them with the prefix appended to the front. This function could be part of a database utility library or package, which provides various functions for interacting with databases.