The Closure class

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

Introduction

Class used to represent anonymous functions.

Anonymous functions yield objects of this type. This class has methods that allow further control of the anonymous function after it has been created.

Besides the methods listed here, this class also has an __invoke method. This is for consistency with other classes that implement calling magic, as this method is not used for calling the function.

Class synopsis

final class Closure {

/* Methods */

private function __construct()

public static function bind(Closure $closure, ?object $newThis, object|string|null $newScope = "static"): ?Closure

public function bindTo(?object $newThis, object|string|null $newScope = "static"): ?Closure

public function call(object $newThis, mixed ...$args): mixed

public static function fromCallable(callable $callback): Closure

public static function getCurrent(): Closure

}

Changelog

Version	Description
8.4.0	The output of Closure::__debugInfo() now includes the name, line, and file of the closure.

Notes

Note:
Closure objects cannot be serialized as closures may contain bound variables and a specific execution context. Attempting to serialize a closure will throw an Exception.

Closure::__construct — Constructor that disallows instantiation
Closure::bind — Duplicates a closure with a specific bound object and class scope
Closure::bindTo — Duplicates the closure with a new bound object and class scope
Closure::call — Binds and calls the closure
Closure::fromCallable — Converts a callable into a closure
Closure::getCurrent — Returns the currently executing closure

The Closure class

Introduction

Class synopsis

Changelog

Notes

Table of Contents