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<?php class Foo { public $parent; } $a = new Foo(); $a->parent = new stdClass(); $a->parent->x = [$a]; print_r($a); $arr = [ [$a], $a, ]; print_r($arr);
Output for git.master_jit, git.master
Foo Object ( [parent] => stdClass Object ( [x] => Array ( [0] => Foo Object *RECURSION* ) ) ) Array ( [0] => Array ( [0] => Foo Object ( [parent] => stdClass Object ( [x] => Array ( [0] => Foo Object *RECURSION* ) ) ) ) [1] => Foo Object ( [parent] => stdClass Object ( [x] => Array ( [0] => Foo Object *RECURSION* ) ) ) )

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