php用array_merge实现无限级分类
<?php
$area = array(
array("id"=>1,"name"=>"河北","parent"=>0),
array("id"=>2,"name"=>"海淀","parent"=>7),
array("id"=>3,"name"=>"定州市","parent"=>5),
array("id"=>4,"name"=>"昌平","parent"=>7),
array("id"=>5,"name"=>"保定","parent"=>1),
array("id"=>6,"name"=>"朝阳","parent"=>7),
array("id"=>7,"name"=>"北京","parent"=>0),
array("id"=>8,"name"=>"上地","parent"=>2)
);
function familyclass2($arr,$id) {
$tree = array();
foreach($arr as $v) {
if($v["id"]==$id) {
$tree[] = $v;
if($v["parent"]>0) {
$tree = array_merge($tree,familyclass2($arr,$v["parent"]));
}
}
}//foreach end
return $tree;
}
print_r(familyclass2($area,8));
?>
$area = array(
array("id"=>1,"name"=>"河北","parent"=>0),
array("id"=>2,"name"=>"海淀","parent"=>7),
array("id"=>3,"name"=>"定州市","parent"=>5),
array("id"=>4,"name"=>"昌平","parent"=>7),
array("id"=>5,"name"=>"保定","parent"=>1),
array("id"=>6,"name"=>"朝阳","parent"=>7),
array("id"=>7,"name"=>"北京","parent"=>0),
array("id"=>8,"name"=>"上地","parent"=>2)
);
function familyclass2($arr,$id) {
$tree = array();
foreach($arr as $v) {
if($v["id"]==$id) {
$tree[] = $v;
if($v["parent"]>0) {
$tree = array_merge($tree,familyclass2($arr,$v["parent"]));
}
}
}//foreach end
return $tree;
}
print_r(familyclass2($area,8));
?>
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