-
- $a = array(
- 'a' => 'a',
- 'b' => 'b'
- );
- $b = array(
- 'a' => 'a',
- 'b' => 'b'
- );
- $a['b'] = null;
- unset($b['b']);
- print('
');</li>
<li>print_r($a);</li>
<li>print('<br />');</li>
<li>print_r($b);</li>
<li>print('');
- ?>
结果：
Array
(
[a] => a
=>
)
Array
(
[a] => a
)
| 
![[웹 프런트엔드] Node.js 빠른 시작](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
