Online PHP editor | rfc for h7ZER

@ 2024-03-06T21:37:49Z

<?php

class WeakMap2
{
    private array $weakRefs = [];
    private array $values = [];

    public function offsetSet($object, $value) : void
    {
        $id = spl_object_id($object);

        $this->weakRefs[$id] = \WeakReference::create($object);
        $this->values[$id]   = $value;
    }
}

class WeakAnalysingMapRepro
{
    public array $valueWithOwnerCountByIndex = [];

    private WeakMap2 $ownerDestructorHandlers;

    public function __construct()
    {
        $this->ownerDestructorHandlers = new WeakMap2();

        $this->addKeyOwner(new \DateTime());
    }

    protected function addKeyOwner(object $owner)
    {
        $handler = new class($this) {
            private \WeakReference $weakAnalysingMap;

            public function __construct(WeakAnalysingMapRepro $analysingMap)
            {
                $this->weakAnalysingMap = \WeakReference::create($analysingMap);
            }

            public function __destruct()
            {
                $analysingMap = $this->weakAnalysingMap->get();

                var_dump(array_keys($analysingMap->valueWithOwnerCountByIndex));
                \Closure::bind(static function () use ($analysingMap) {
                    var_dump(array_keys($analysingMap->valueWithOwnerCountByIndex));
                }, null, WeakAnalysingMapRepro::class)();
            }

            public function addReference($index): void
            {
                $analysingMap = $this->weakAnalysingMap->get();
                $analysingMap->valueWithOwnerCountByIndex[$index] = true;
            }
        };

        $this->ownerDestructorHandlers->offsetSet($owner, $handler);

        $handler->addReference(10);
    }
}

$map = new WeakAnalysingMapRepro();
unset($map);

echo 'DONE';

Output for git.master_jit, git.master: Warning: Attempt to read property "valueWithOwnerCountByIndex" on null in /in/h7ZER on line 44 Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, null given in /in/h7ZER:44 Stack trace: #0 /in/h7ZER(44): array_keys(NULL) #1 /in/h7ZER(64): class@anonymous->__destruct() #2 {main} thrown in /in/h7ZER on line 44
Process exited with code 255.
Output for rfc.property-hooks: array(1) { [0]=> int(10) } array(1) { [0]=> string(12) "analysingMap" } DONE

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2020-03-21 RFC: Is_Literal - declined
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