php迭代示例

<code>

<?php
echo “<pre>”;
$area = array(
array(‘id’=>113,’area’=>’亚运村’,’pid’=>11),
array(‘id’=>115,’area’=>’奥运村’,’pid’=>11),
array(‘id’=>1,’area’=>’北京’,’pid’=>0),
array(‘id’=>2,’area’=>’广西’,’pid’=>0),
array(‘id’=>3,’area’=>’广东’,’pid’=>0),
array(‘id’=>4,’area’=>’福建’,’pid’=>0),
array(‘id’=>11,’area’=>’朝阳区’,’pid’=>1),
array(‘id’=>12,’area’=>’海淀区’,’pid’=>1),
array(‘id’=>21,’area’=>’南宁市’,’pid’=>2),
array(‘id’=>45,’area’=>’福州市’,’pid’=>4),
array(‘id’=>234,’area’=>’武鸣县’,’pid’=>21)
);

function familytree($arr,$id){
static $list = array();
foreach($arr as $v){
if($v[‘id’]==$id){

familytree($arr,$v[‘pid’]);
$list[] = $v;
}
}
return $list;
}
print_r(familytree($area,113));
?>

</code>

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