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<?php $foo = new class { private $a = 3; protected $b = 2; public $c = 1; }; $arr = (array)$foo; var_dump($arr); var_dump(array_keys($arr)[0][0]); $b = array_keys($arr)[2]; var_dump($b);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { ["class@anonymous/in/1BakW:3$0a"]=> int(3) ["*b"]=> int(2) ["c"]=> int(1) } string(1) "" string(1) "c"

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