以前从来没写过递归（其实想想，对算法完全没概念），刚好有这个需求，试着写了一下，发现也挺容易的，特别记录一下。
数据库是dedecms默认的，dede_arctype是保存栏目的表，reid是栏目的父级栏目id。
复制代码 代码如下:
$array = array();
get_sons($type, $array);
var_dump($array);
function get_sons($type, &$current_array){
$result = mysql_query("select id from dede_arctype where reid = {$type}");
while($row = mysql_fetch_assoc($result)){
$current_array[] = $row['id'];
get_sons($row['id'], $current_array);
}
}
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