Closure
PHP Manual

Closure::bind

Duplicates a closure with a specific bound object and class scope

Description

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.

Parameters

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.

Return Values

Returns a new Closure object or FALSE on failure

Changelog

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

Examples

Example #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";
?>

The above example will output something similar to:

1
2

See Also