从树构建阵列递归函数 [英] Recursive function for building array from tree
本文介绍了从树构建阵列递归函数的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个数组,看起来像这样:
I have an array that looks like this:
Array (
[0] => Array
(
[term_id] => 23
[name] => testasdf
[depth] => 1
)
[1] => Array
(
[term_id] => 26
[name] => asdf
[depth] => 2
)
[2] => Array
(
[term_id] => 31
[name] => Another level deep
[depth] => 3
)
[3] => Array
(
[term_id] => 32
[name] => Another level deep
[depth] => 2
)
[4] => Array
(
[term_id] => 24
[name] => testasdf
[depth] => 1
)
[5] => Array
(
[term_id] => 27
[name] => asdf
[depth] => 1
)
)
下面是我使用递归函数,它的作品除了在某些情况下(其中深度越大它似乎。
Here is the recursive function that I'm using, it works except in some cases (where the depth is greater it seems.
function process(&$arr, &$prev_sub = null, $cur_depth = 1) {
$cur_sub = array();
while($line = current($arr)){
if($line['depth'] < $cur_depth){
return $cur_sub;
}elseif($line['depth'] > $cur_depth){
$prev_sub = $this->process($arr, $cur_sub, $cur_depth + 1 );
}else{
$cur_sub[$line['term_id']] = array('term_id' => $line['term_id'], 'name' => $line['name']);
$prev_sub =& $cur_sub[$line['term_id']];
next($arr);
}
}
return $cur_sub;
}
这是结果怎么看:
Array
(
[23] => Array
(
[26] => Array
(
[31] => Array
(
[term_id] => 31
[name] => Another level deep
)
)
[32] => Array
(
[term_id] => 32
[name] => Another level deep
)
)
[24] => Array
(
[term_id] => 24
[name] => testasdf
)
[27] => Array
(
[term_id] => 27
[name] => asdf
)
)
任何想法,我怎么能有这么的term_id和名称将显示所有的深度?
Any idea how I can have it so the term_id and name is shown for all depths?
推荐答案
试试这个:
function process(&$arr, &$prev_sub = null, $cur_depth = 1) {
$cur_sub = array();
while($line = current($arr)){
if($line['depth'] < $cur_depth){
return $cur_sub;
}
if($line['depth'] > $cur_depth){
$prev_sub = $this->process($arr, $cur_sub, $cur_depth + 1 );
}
$cur_sub[$line['term_id']] = array('term_id' => $line['term_id'], 'name' => $line['name']);
$prev_sub =& $cur_sub[$line['term_id']];
next($arr);
}
return $cur_sub;
}
这篇关于从树构建阵列递归函数的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文