(PECL weakref >= 0.1.0)
Releases a previously acquired reference
public bool Weakref::release ( void )
Releases a previously acquired reference, potentially turning a strong reference back into a weak reference.
The Weakref instance maintains an internal acquired counter to track outstanding strong references. If the call to Weakref::release() is successful, this counter will be decremented by one. Once this counter reaches zero, the strong reference is turned back into a weak reference.
Returns:
Returns TRUE
if the reference was previously acquired and thus could be released, FALSE
otherwise.
Examples:
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); ?>
The above example will output:
Unsetting o1... Unsetting o2... Destroying object!
See also:
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