Weakref::__construct
(PECL weakref >= 0.1.0)
Weakref::__construct — Constructs a new weak reference
Description
public Weakref::__construct ( object $object )
Constructs a new weak reference.
Parameters
object
The object to reference.
Return Values
No value is returned.
Examples
Example #1 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!← Weakref::acquire
Weakref::get →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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