All 7 Magic Methods questions
More in Magic Methods
What are magic methods in PHP, and how do the __construct and __destruct methods represent two of the most commonly used examples? What do the __get and __set magic methods do, and how do they let you customize behavior when accessing properties that do not exist or are inaccessible? What does the __call magic method do, and how can it be used to implement dynamic method handling for methods that are not explicitly defined on a class? What does the __invoke magic method do, and how does it let you use an object instance directly as if it were a function? How can __clone be used to customize what happens when an object is duplicated using PHP's clone keyword, particularly for handling deep copies of nested objects? What are the risks of overusing magic methods in a codebase, and why do many experienced developers recommend using them sparingly and deliberately?
Advertisement
Back to results for “OOP”
PHP › Magic Methods

How does the __toString magic method let you control how an object is represented when it is used in a context expecting a string, such as being echoed directly?

Intermediate

Answer

The __toString magic method defines what string should be produced whenever an object is used in a context that expects a string, such as being directly echoed or concatenated with another string, letting you provide a natural, readable text representation of an object's data without requiring calling code to manually call a separate formatting method every time it needs to display that object as text.
class Money {
    public function __construct(private float $amount, private string $currency) {}
    public function __toString(): string {
        return number_format($this->amount, 2) . ' ' . $this->currency;
    }
}
echo new Money(29.99, 'USD');
Real-world example A Money value object implements __toString so that simply echoing an instance directly produces a nicely formatted price string, letting the object be used naturally within templates without requiring a separate explicit formatting call every time.

Common follow-ups: What happens if you try to echo an object that does not implement __toString?;Can __toString throw an exception, and what happens if it does?

OOP;Template Engines (Blade & Twig)
All 7 Magic Methods questions