(PECL weakref >= 0.1.0)
Constructs a new weak reference
public Weakref::__construct ( object
$object
)Constructs a new weak reference.
Parameters:
object
The object to reference.
Returns:
No value is returned.
Examples:
Weakref::__construct() example
<?php class MyClass { public function __destruct() { echo "Destroying object!\n"; } } $o1 = new MyClass; $r1 = new Weakref($o1); if ($r1->valid()) { echo "Object still exists!\n"; var_dump($r1->get()); } else { echo "Object is dead!\n"; } unset($o1); if ($r1->valid()) { echo "Object still exists!\n"; var_dump($r1->get()); } else { echo "Object is dead!\n"; } ?>
The above example will output:
Object still exists! object(MyClass)#1 (0) { } Destroying object! Object is dead!
Please login to continue.