PHP Australia Conference 2015

Weakref::release

(PECL weakref >= 0.1.0)

Weakref::releaseReleases a previously acquired reference

Descrição

public bool Weakref::release ( void )

Releases a previously acquired reference. Potentially turning a strong reference back into a weak reference.

Parâmetros

Esta função não possui parâmetros.

Valor Retornado

Returns TRUE if the reference was previously acquired and thus could be released, FALSE otherwise.

Exemplos

Exemplo #1 Weakref::release() example

<?php
class MyClass {
    public function 
__destruct() {
        echo 
"Destroying object!\n";
    }
}

$o1 = new MyClass;

$r1 = new Weakref($o1);

$r1->acquire();

echo 
"Unsetting o1...\n";
unset(
$o1);

$o2 $r1->get();

$r1->release();

echo 
"Unsetting o2...\n";
unset(
$o2);
?>

O exemplo acima irá imprimir:

Unsetting o1...
Unsetting o2...
Destroying object!

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