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请问一个简单的递归
- WBOYOriginal
- 2016-06-13 12:47:00756browse
请教一个简单的递归
$arr = array(
array(
'id' => 1,
'parentid' => 0,
'title' => 'a'
),
array(
'id' => 2,
'parentid' => 1,
'title' => 'a-1'
),
array(
'id' => 3,
'parentid' => 1,
'title' => 'a-1'
),
array(
'id' => 4,
'parentid' => 2,
'title' => 'a-1-1'
)
);
递归转换为数组如下:
$arr = array(
array(
'id' => 1,
'parentid' => 0,
'title' => 'a',
'child' => array(
array(
'id' => 2,
'parentid' => 1,
'title' => 'a-1',
'child' => array(
......
)
array(
'id' => 3,
'parentid' => 2,
'title' => 'a-2'
)
),
......
);
请问要如何写这个递归呢?