Query: weakref
OS: php
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
WEAKREF(3) 1 WEAKREF(3) The WeakRef classINTRODUCTIONThe WeakRef class provides a gateway to objects without preventing the garbage collector from freeing those objects. It also provides a way to turn a weak reference into a strong one.CLASS SYNOPSISWeakRef WeakRef Methods o public Weakref::__construct (object $object) o public bool Weakref::acquire (void ) o public object Weakref::get (void ) o public bool Weakref::release (void ) o public bool Weakref::valid (void )EXAMPLESExample #1 WeakRef usage example <?php class MyClass { public function __destruct() { echo "Destroying object! "; } } $o1 = new MyClass; $r1 = new WeakRef($o1); if ($r1->valid()) { echo "Object still exists! "; var_dump($r1->get()); } else { echo "Object is dead! "; } unset($o1); if ($r1->valid()) { echo "Object still exists! "; var_dump($r1->get()); } else { echo "Object is dead! "; } ?> The above example will output: Object still exists! object(MyClass)#1 (0) { } Destroying object! Object is dead! PHP Documentation Group WEAKREF(3)
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Error: unknown pseudo-op: `.weakref' |