// Function to check if the provided password matches the hashed password function checkPassword($password, $hashedPassword) { return password_verify($password, $hashedPassword); } // Example usage $userPassword = "mypassword123"; $hashedPassword = password_hash($userPassword, PASSWORD_DEFAULT); if (checkPassword($userPassword, $hashedPassword)) { echo "Login successful."; } else { echo "Incorrect password."; }In this example, the checkPassword function takes two parameters: the plain text password entered by the user, and the hashed password retrieved from the database. The function then uses the password_verify function, which is part of the PHP password hashing API, to check if the passwords match. The package library used in this example is the PHP password hashing API, which is included in PHP 5.5.0 and later versions.