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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 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.19, 8.4.1 - 8.4.5
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.
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
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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161.15 ms | 408 KiB | 5 Q