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<?php class Foo { public $x; } $x = new Foo(); $x->x = $x; // comment this line out $y = new WeakRef($x); unset($x); var_dump($y->get()); gc_collect_cycles(); var_dump($y->get());
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Class "WeakRef" not found in /in/o2kk2:9 Stack trace: #0 {main} thrown in /in/o2kk2 on line 9
Process exited with code 255.

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