--TEST--

Bug #71835 (json_encode sometimes incorrectly detects recursion with JsonSerializable)

--FILE--

class SomeClass implements JsonSerializable {

}

$class = new SomeClass;

$arr = [$class];

var_dump(json_encode($arr));

class SomeClass2 implements JsonSerializable {

}

$class = new SomeClass2;

$arr = [$class];

var_dump(json_encode($arr));

--EXPECT--

string(6) "[[[]]]"

string(6) "[[[]]]"