xref: /PHP-8.1/ext/json/tests/bug71835.phpt (revision 5beba0b0) 
1--TEST--
2Bug #71835 (json_encode sometimes incorrectly detects recursion with JsonSerializable)
3--FILE--
4<?php
5class SomeClass implements JsonSerializable {
6    public function jsonSerialize(): mixed {
7        return [get_object_vars($this)];
8    }
9}
10$class = new SomeClass;
11$arr = [$class];
12var_dump(json_encode($arr));
13
14class SomeClass2 implements JsonSerializable {
15    public function jsonSerialize(): mixed {
16        return [(array)$this];
17    }
18}
19$class = new SomeClass2;
20$arr = [$class];
21var_dump(json_encode($arr));
22?>
23--EXPECT--
24string(6) "[[[]]]"
25string(6) "[[[]]]"
26