// require the password hashing library require 'password_compat.php'; // function to update user's password function setPass($userId, $password) { // hash the password for security $hash = password_hash($password, PASSWORD_DEFAULT); // update the user's password in the database $query = "UPDATE users SET password = :password WHERE id = :id"; // code to execute query } // example usage setPass(1, 'newpassword123');In this example, we first require the password hashing library for added security. We then define a function called setPass that takes a user ID and a password as input parameters. Inside the function, we hash the password using the password_hash function and then update the user's password in the database using an SQL query. The package library used in this example is the password_compat library, which provides a compatibility layer for the password hashing functions introduced in PHP 5.5. Overall, the setPass function is a useful tool for updating user passwords securely in PHP applications.