Question

我有这个代码我需要用来从数据库中获取结果，我在codeigniter上。这就是查询的样子，

        $this->db->select('*');
        $this->db->where('broadcast_id', $bid);
        $query = $this->db->get('ih_noticeboard');
        $result = $query->result();
        if($query->num_rows() < 1){
            $data = "no feed ";
        }else{
            $data = $result;
        }

where子句中的$bid来自此代码，

    $this->db->select('broadcast_id');
    $this->db->where('broadcast_subscribers', $id);
    $query = $this->db->get('ih_broadcastors    ');
    if($query->num_rows() < 1){
        $data = "user not subscribed to any broadcasting";
    }else{
        $ress = $query->result();
        foreach ($ress as $row){
            $bid = $row->broadcast_id;
        }`

现在，select只使用一个$ bid，如何将$ bid用作数组？

Answer 1

这很简单。只需使用$ this-＆gt; db-＆gt; where_in（'broadcast_id'，$ bid）;

相反，如果$ this-＆gt; db-＆gt; where（'broadcast_id'，$ bid）;

https://ellislab.com/codeigniter/user-guide/database/active_record.html#select

Answer 2

最好有一个查询来获取Feed吗？

$this->db->select("ih_noticeboard.*");
$this->db->from("ih_noticeboard");
$this->db->join("ih_broadcastors", "ih_noticeboard.broadcast_id = ih_broadcasters.broadcast_id");
$this->db->where("ih_broadcastors.broadcast_subscribers", $id);
$result->db->get()->result();

Answer 3

假设您要在表中选择

name ='jane'和broadcast_id = 2＃作为示例

        $bid=array(
           'name'=>'jane',
           'broadcast_id'=>'2'
                  ) 

        $this->db->where($bid);
        $this->db->from($table_name);
        $query = $this->db->get()->result_array();
        return $query;

请注意，必须格式化 $ bid as数组的格式以适合要查询的下一个数据库表。您可以使用 foreach循环，例如

   foreach ($ress as $row){
        $bid = array(
             'name'=>$row['name'],
             'broadcast_id'=>$row['id']
         );
    }

Codeigniter db选择数组的位置

3 个答案: