function node_son_id($node, $pid = 0)
{
$arr = array();
foreach ($node as $k => $v) {
if ($v['pid'] == $pid) {
$arr[] = $v['id'];
$arr = array_merge(node_son_id($node, $v['id']), $arr);
}
}
return $arr;
}
/**
* 删除节点
*/
public function delNode()
{
$db = M('node');
if ($db->in(node_son_id($_POST['id']))->del()) {
echo 1;
exit;
}
}
/**
* 获取节点的所有子节点ID
* @param int $nid 节点ID
* @param array $field 主键字段名(如：nid、id)、父字段名(如：pid)。默认：array('nid','pid');
* @param $data 默认的数据,一般不传
* @return 子节点数组
*/
function node_son_id($nid, $field = array('nid', 'pid'), $data = NULL)
{
$db = M('node');
if ($nid !== FALSE) {
$n = $db->field($field[0])->where($field[0] . '=' . $nid)->findall();
} else {
$n = $data;
}
$nodes = array($field[0] => array());
foreach ($n as $value) {
$v = $db->field($field[0])->where($field[1] . '=' . $value[$field[0]])->findall();
if ($v) {
$a = node_son_id(FALSE, $field, $v);
foreach ($a[$field[0]] as $v_a) {
$nodes[$field[0]][] = $v_a;
}
}
$nodes[$field[0]][] = $value[$field[0]];
}
return $nodes;
}