Closure
PHP-Handbuch

Closure::bind

Duplicates a closure with a specific bound object and class scope

Beschreibung

public static Closure Closure::bind ( Closure $closure , object $newthis [, mixed $newscope = "static" ] )

This method is a static version of Closure::bindTo. See the documentation of that method for more information.

Parameter-Liste

closure

The anonymous functions to bind.

newthis

The object to which the given anonymous function should be bound, or NULL for the closure to be unbound.

newscope

The class scope to which associate the closure is to be associated, or 'static' to keep the current one. If an object is given, the type of the object will be used instead. This determines the visibility of protected and private methods of the bound object. It is not allowed to pass (an object of) an internal class as this parameter.

Rückgabewerte

Returns a new Closure object Im Fehlerfall wird FALSE zurückgegeben.

Changelog

Version Beschreibung
7.0.0 newscope can not be (an object of) an internal class anymore, what was possible prior to this version.

Beispiele

Beispiel #1 Closure::bind example

<?php
class A {
    private static $sfoo = 1;
    private $ifoo = 2;
}
$cl1 = static function() {
    return A::$sfoo;
};
$cl2 = function() {
    return $this->ifoo;
};

$bcl1 = Closure::bind($cl1, null, 'A');
$bcl2 = Closure::bind($cl2, new A(), 'A');
echo $bcl1(), "\n";
echo $bcl2(), "\n";
?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

1
2

Siehe auch