array_walk_recursive 递归
最后更新于：2022-04-02 02:27:39
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## 简单demo
```
$sweet = array('a' => 'apple', 'b' => 'banana');
$fruits = array('sweet' => $sweet, 'sour' => 'lemon');
function test_print(&$item, $key)
{
$item = "$key holds $item\n";
}
array_walk_recursive($fruits, 'test_print');
var_export($fruits);
/*
[
'sweet' => [
'a' => 'a holds apple ',
'b' => 'b holds banana ',
],
'sour' => 'sour holds lemon ',
];
*/
```
';