How can returning true/false in methods improve object-oriented programming practices in PHP?

Returning true/false in methods can improve object-oriented programming practices in PHP by providing a clear indication of whether a method was successful or not. This helps in making the code more readable and maintainable. It also allows for better error handling and decision-making within the program. 

class User {
    private $loggedIn = false;

    public function login($username, $password) {
        // Perform login logic
        if ($loginSuccessful) {
            $this->loggedIn = true;
            return true;
        } else {
            return false;
        }
    }

    public function isLoggedIn() {
        return $this->loggedIn;
    }
}

$user = new User();
if ($user->login('username', 'password')) {
    echo 'Login successful!';
} else {
    echo 'Login failed.';
}

Keywords

object-oriented programming PHP methods return value boolean programming practices

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