我在编写递归函数以遍历此层次结构时遇到麻烦
object(stdClass)#290 (6) {
["category_id"]=>
int(1)
["parent_id"]=>
int(0)
["name"]=>
string(4) "Root"
["position"]=>
int(0)
["level"]=>
int(0)
["children"]=>
array(2) {
[0]=>
object(stdClass)#571 (7) {
["category_id"]=>
int(2)
["parent_id"]=>
int(1)
["name"]=>
string(18) "Root MySite.com"
["is_active"]=>
int(0)
["position"]=>
int(0)
["level"]=>
int(1)
["children"]=>
array(11) {
[0]=>
object(stdClass)#570 (7) {
["category_id"]=>
int(15)
["parent_id"]=>
int(2)
["name"]=>
string(9) "Widgets"
["is_active"]=>
int(1)
["position"]=>
int(68)
["level"]=>
int(2)
["children"]=>
array(19) {
[0]=>
object(stdClass)#566 (7) {
["category_id"]=>
int(24)
["parent_id"]=>
int(15)
["name"]=>
string(16) "Blue widgets"
["is_active"]=>
int(1)
["position"]=>
int(68)
["level"]=>
int(3)
["children"]=>
array(0) {
}
}
<snip....>
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如您所见,此嵌套集可以永远继续下去。
我要退货是这样的
$categories("Root" => array("Root MySite.com" => array("Widgets" => array("Blue Widgets",...))))
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[编辑]:为我的递归函数粘贴我的起点,该函数将简单地“拉平”一个对象或对象。我认为我可以对其进行修改,以获取所需的数据结构,但还无法使其完全正确。
function array_flatten($array, $return)
{
// `foreach` can also iterate through object properties like this
foreach($array as $key => $value)
{
if(is_object($value))
{
// cast objects as an array
$value = (array) $value;
}
if(is_array($value))
{
$return = array_flatten($value,$return);
}
else
{
if($value)
{
$return[] = $value;
}
}
}
return $return;
}
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问题是我不能完全弄清楚要递归构建的结构,还是有一种更优雅的php方式来做到这一点?
尝试这个
function run($o) {
$return = array();
foreach ($o->children as $child) {
$return[$child->name] = run($child);
}
return empty($return) ? null : $return;
}
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