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|
--TEST--
The weak part of the WeakMap
--FILE--
<?php
$map = new WeakMap;
// This is doing to be inserted into the map and immediately removed again
$map[new stdClass] = 1;
var_dump($map);
$obj = new stdClass;
$map[$obj] = 2;
var_dump($map);
unset($obj);
var_dump($map);
echo "\nDestructor in WeakMap value:\n";
$obj = new stdClass;
$map[$obj] = new class {
public function __destruct() {
echo "Dtor!\n";
}
};
echo "Before unset:\n";
unset($obj);
echo "After unset:\n";
var_dump($map);
echo "\nDestroying map with live object:\n";
$obj = new stdClass;
$map[$obj] = 3;
unset($map);
var_dump($obj);
echo "\nObject freed by GC:\n";
$map = new WeakMap;
$obj = new stdClass;
$obj->obj = $obj;
$map[$obj] = 4;
unset($obj);
var_dump($map);
gc_collect_cycles();
var_dump($map);
echo "\nStoring object as own value:\n";
$map = new WeakMap;
$obj = new stdClass;
$map[$obj] = $obj;
unset($obj);
var_dump($map);
unset($map);
echo "\nStoring map in itself:\n";
$map = new WeakMap;
$map[$map] = $map;
var_dump($map);
unset($map);
?>
--EXPECT--
object(WeakMap)#1 (0) {
}
object(WeakMap)#1 (1) {
[0]=>
array(2) {
["key"]=>
object(stdClass)#2 (0) {
}
["value"]=>
int(2)
}
}
object(WeakMap)#1 (0) {
}
Destructor in WeakMap value:
Before unset:
Dtor!
After unset:
object(WeakMap)#1 (0) {
}
Destroying map with live object:
object(stdClass)#2 (0) {
}
Object freed by GC:
object(WeakMap)#1 (1) {
[0]=>
array(2) {
["key"]=>
object(stdClass)#3 (1) {
["obj"]=>
*RECURSION*
}
["value"]=>
int(4)
}
}
object(WeakMap)#1 (0) {
}
Storing object as own value:
object(WeakMap)#3 (1) {
[0]=>
array(2) {
["key"]=>
object(stdClass)#1 (0) {
}
["value"]=>
object(stdClass)#1 (0) {
}
}
}
Storing map in itself:
object(WeakMap)#3 (1) {
[0]=>
array(2) {
["key"]=>
*RECURSION*
["value"]=>
*RECURSION*
}
}
|
