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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? 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? 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?
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What are magic methods in PHP, and how do the __construct and __destruct methods represent two of the most commonly used examples?

Beginner

Answer

Magic methods are special methods in PHP, always prefixed with a double underscore, that PHP automatically calls in response to certain actions performed on an object, with __construct being called automatically whenever a new object is created to handle initialization logic, and __destruct being called automatically when an object is no longer needed and is about to be removed from memory, letting you run cleanup logic like closing an open file handle.
class Logger {
    public function __construct(private string $filePath) {
        echo "Logger initialized";
    }
    public function __destruct() {
        echo "Logger destroyed";
    }
}
Real-world example A file handling class opens a file resource within its __construct method and reliably closes that same resource within its __destruct method, ensuring proper cleanup happens automatically whenever an instance of that class goes out of scope.

Common follow-ups: When exactly does PHP call the __destruct method during a script's execution?;Can a class have multiple constructors with different parameter signatures?

OOP;Error & Exception Handling
All 7 Magic Methods questions