Edit report at http://bugs.php.net/bug.php?id=52300&edit=1
ID: 52300
Comment by: olamedia at gmail dot com
Reported by: olamedia at gmail dot com
Summary: spl_get_object_by_hash()
Status: Open
Type: Feature/Change Request
Package: SPL related
PHP Version: 5.3.3RC2
New Comment:
Of course, the real problem is in garbage collector, which can't handle
crossreferences. This function is quicker to-do alternative.
Previous Comments:
------------------------------------------------------------------------
[2010-07-11 12:26:17] cataphr...@php.net
If you want weak references, this seems like a poor substitute. Who
would want to store a reference that may yield another object in the
future?
------------------------------------------------------------------------
[2010-07-09 07:41:21] olamedia at gmail dot com
Description:
------------
class a{}
$object = new a();
$object2 = spl_get_object_by_hash(spl_object_hash($object));
var_dump($object === $object2); // true (same object)
NOTE: When using spl_get_object_by_hash, you must know that $object must
be alive
else function can return another object.
Primary usage example in test script:
Test script:
---------------
class a{
protected $_b;
public function getB(){
return spl_get_object_by_hash($this->_b);
}
public function doSomething(){
$b = $this->getB();
// here I can use $b !
}
public function __construct($b){
$this->_b = spl_object_hash($b);
}
}
class b{
protected $_a;
public function getA(){
return $this->_a;
}
public function __construct(){
$this->_a = new a($this);
}
public function __destruct(){
echo 'destroyed';
}
}
$b = new b();
$b->getA()->doSomething();
unset($b); // destroyed !! this IS NOT POSSIBLE without
spl_get_object_by_hash()
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/bug.php?id=52300&edit=1
