Closure::call

(PHP 7)

Closure::callBinds and calls the closure

Опис

public mixed Closure::call ( object $newthis [, mixed $... ] )

Temporarily binds the closure to newthis, and calls it with any given parameters.

Параметри

newthis

The object to bind the closure to for the duration of the call.

...

Zero or more parameters, which will be given as parameters to the closure.

Значення, що повертаються

Returns the return value of the closure.

Приклади

Приклад #1 Closure::call() example

<?php
class Value {
    protected 
$value;

    public function 
__construct($value) {
        
$this->value $value;
    }

    public function 
getValue() {
        return 
$this->value;
    }
}

$three = new Value(3);
$four = new Value(4);

$closure = function ($delta) { var_dump($this->getValue() + $delta); };
$closure->call($three4);
$closure->call($four4);
?>

Наведений вище приклад виведе:

int(7)
int(8)
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User Contributed Notes 1 note

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3
sergey dot nevmerzhitsky at gmail dot com
5 years ago
Prior PHP 7.0 you can use this code:

<?php
$cl
= function($add) { return $this->a + $add; };

$cl->bindTo($newthis);
return
call_user_func_array($cl, [10]);
?>

But this bind the closure permanently! Also read the article for Closure::bindTo() about binding closures from static context.
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