1--TEST-- 2Self-referencing map entry GC - 014 3--FILE-- 4<?php 5 6class Value { 7 public function __construct(public readonly string $value) { 8 } 9} 10 11$map = new WeakMap(); 12$obj = new Value('a'); 13$map[$obj] = $obj; 14 15gc_collect_cycles(); 16 17$obj2 = $obj; 18$obj = null; 19$map2 = $map; 20$map = null; 21 22gc_collect_cycles(); 23 24var_dump($map2); 25?> 26--EXPECT-- 27object(WeakMap)#1 (1) { 28 [0]=> 29 array(2) { 30 ["key"]=> 31 object(Value)#2 (1) { 32 ["value"]=> 33 string(1) "a" 34 } 35 ["value"]=> 36 object(Value)#2 (1) { 37 ["value"]=> 38 string(1) "a" 39 } 40 } 41} 42