PHP递归 获取数据

递归获取 下级数据

public function get_address_id($address_id)
{
    
    
    $address_data = $address_id.",";
    $address_id_array = query('SELECT `id` FROM '.tablename('ewei_shop_grid_address').' WHERE pid = '.$address_id);
    foreach($address_id_array as $k => $v)
    {
        $address_data .= $this->get_address_id($v["id"]);   
    }
    return $address_data;
}

递归获取 上级 数据

public function get_superior_address_id($address_id)
{
    
    
    $address_data = $address_id.",";
    $pid = query('SELECT `pid` FROM '.tablename('ewei_shop_grid_address').' WHERE id = '.$address_id);
    if($pid['pid'] != 0){ 
        $address_data .= $this->get_superior_address_id($pid['pid']);
    }
    return $address_data;
}

获取父级分类

function get_parent_id($cid)
{
    
    
    global $db;
    $pids = '';

    $parent_id = query("select parent_id from eload_category where cat_id = '".$cid."'");
    if( $parent_id != '' ){
        $pids .= $parent_id;
        $npids = get_parent_id( $parent_id );
        if(isset($npids))
            $pids .= ','.$npids;
    }
    return $pids;
}

获取子集分类

function get_category( $category_id ){
    
    
    global $db;
    $category_ids = $category_id.",";
    $child_category = query("select cat_id from eload_category where parent_id = '$category_id'");
    foreach( $child_category as $key => $val )
        $category_ids .= get_category( $val["cat_id"] );
    return $category_ids;
}**