具有 n 级深度的 PHP 数组

Question

假设我有一个数组并且递归地想要做一些任务。我花了一天时间解决这个问题。可能是我的逻辑不好。 任何关于如何以有效的方式做这些事情的帮助都会节省我的时间。

我有一个深度为 n 级的数组，看起来像：

Array
(
[0] => Array
(
[name] => user1
[email] => [e-mail]            
[depth] => 1            
) 
[1] => Array
(
[name] => user2
[email] => [e-mail]            
[depth] => 1 
[0] => Array
(
[0] => Array
(
[name] => user2.1
[email] => [e-mail]                            
[depth] => 2
)
)
) 
[2] => Array
(
[name] => user3
[email] => [e-mail]             
[depth] => 1
[0] => Array
(
[0] => Array
(
[name] => user3.1
[email] => [e-mail]                              
[depth] => 2
[0] => Array
(
[0] => Array
(
[name] => user3.1.1
[email] => [e-mail]                                            
[depth] => 3
)
)
)
[1] => Array
(
[name] => user3.2
[email] => [e-mail]                              
[depth] => 2                            
)
)
)
)  

我想以这种格式更改上面的数组：

array(
0 => array(
'name' => 'user1',
),      
1 => array(
'name' => 'user2',      
'children' => array(
0 => array(
'name' => 'user2.1',                    
) ,             
) ,
) ,     
2 => array(
'name' => 'user3',
'children' => array(
0 => array(
'name' => 'user3.1',
'children' => array(
0 => array(
'name' => 'user3.1.1',                  
) ,             
) ,
) ,
1 => array(
'name' => '3.2',
)               
) ,
) ,
)

编辑：如果我想以树格式显示数据但无法根据需要将数据推送到数组中，我正在使用此代码并且工作正常。

function displayArrayRecursively($arr, $indent='') {    
if ($arr) {
foreach ($arr as $key => $value) {
if (is_array($value)) {                         
displayArrayRecursively($value, $indent . '-->');
} else {                        
if ($key == 'name')
{   
echo "$indent $value <br>"; 
}
else {
continue;
}                       
}
}
}
}       
displayArrayRecursively($userListArray);

谁能建议我怎么做？

谢谢

Answer 1

此函数将执行您想要的操作：

function process_nodes($nodes) {
$new = array();
foreach ($nodes as $node) {
$new[] = array('name' => $node['name']);
if (isset($node[0])) {
$new[count($new)-1]['children'] = process_nodes($node[0]);
}
}
return $new;
}
print_r(process_nodes($data));

输出：

Array
(
[0] => Array
(
[name] => user1
)
[1] => Array
(
[name] => user2
[children] => Array
(
[0] => Array
(
[name] => user2.1
)
)
)
[2] => Array
(
[name] => user3
[children] => Array
(
[0] => Array
(
[name] => user3.1
[children] => Array
(
[0] => Array
(
[name] => user3.1.1
)
)
)
[1] => Array
(
[name] => user3.2
)
)
)
)