Description:
------------
While in PHP Documentation for Simplified Chinese https://secure.php.net/manual/zh/language.types.object.php

It says:
<?php
$obj = (object) array('1' => 'foo');
var_dump(isset($obj->{'1'})); // outputs 'bool(false)'
var_dump(key($obj)); // outputs 'int(1)'
?>

It should be corrected.

Test script:
---------------
<?php

$obj = (object) array('1'=>'foo');
var_dump(isset($obj->{'1'}));
//var_dump($obj);
var_dump(key($obj));

Expected result:
----------------
Modify documentation.

Actual result:
--------------
bool(true)
string(1) "1"