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php 按pid排序并给出深度
- WBOYOriginal
- 2016-06-06 20:12:401692browse
<code>$arr=[
[
'id'=>1,
'pid'=>0,
'name'=>'name1',
],
[
'id'=>2,
'pid'=>0,
'name'=>'name2',
],
[
'id'=>3,
'pid'=>0,
'name'=>'name3',
],
[
'id'=>4,
'pid'=>1,
'name'=>'name4',
],
[
'id'=>5,
'pid'=>4,
'name'=>'name5',
],
[
'id'=>6,
'pid'=>2,
'name'=>'name6',
],
[
'id'=>7,
'pid'=>2,
'name'=>'name7',
],
];
</code>
排序过会得出
<code>$result=[
[
'id'=>1,
'pid'=>0,
'name'=>'name1'，
'level'=>1,
],
[
'id'=>4,
'pid'=>1,
'name'=>'name4',
'level'=>2,
],
[
'id'=>5,
'pid'=>4,
'name'=>'name5',
'level'=>3,
],
[
'id'=>2,
'pid'=>0,
'name'=>'name2',
'level'=>1,
],
[
'id'=>7,
'pid'=>2,
'name'=>'name7',
'level'=>'2',
],
[
'id'=>6,
'pid'=>2,
'name'=>'name6',
'level'=>2,
]
[
'id'=>3,
'pid'=>0,
'name'=>'name3',
'level'=>1,
],
];</code>
回复内容：
<code>$arr=[
[
'id'=>1,
'pid'=>0,
'name'=>'name1',
],
[
'id'=>2,
'pid'=>0,
'name'=>'name2',
],
[
'id'=>3,
'pid'=>0,
'name'=>'name3',
],
[
'id'=>4,
'pid'=>1,
'name'=>'name4',
],
[
'id'=>5,
'pid'=>4,
'name'=>'name5',
],
[
'id'=>6,
'pid'=>2,
'name'=>'name6',
],
[
'id'=>7,
'pid'=>2,
'name'=>'name7',
],
];
</code>
排序过会得出
<code>$result=[
[
'id'=>1,
'pid'=>0,
'name'=>'name1'，
'level'=>1,
],
[
'id'=>4,
'pid'=>1,
'name'=>'name4',
'level'=>2,
],
[
'id'=>5,
'pid'=>4,
'name'=>'name5',
'level'=>3,
],
[
'id'=>2,
'pid'=>0,
'name'=>'name2',
'level'=>1,
],
[
'id'=>7,
'pid'=>2,
'name'=>'name7',
'level'=>'2',
],
[
'id'=>6,
'pid'=>2,
'name'=>'name6',
'level'=>2,
]
[
'id'=>3,
'pid'=>0,
'name'=>'name3',
'level'=>1,
],
];</code>
<code>function treelist($data, $pid, $deep = 1)
{
static $tree = array();
foreach ($data as $row) {
if ($row ['pid'] == $pid) {
$row ['lever'] = $deep;
$tree [] = $row;
treelist($data, $row ['id'], $deep + 1);
}
}
return $tree;
}</code>
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