下面是我的查询，在codeIgniter的活动记录：

Here's my query, in CodeIgniter's Active Record:

function calculate_invites($userid)
{
    $this->db->where('id', $userid)
               ->update('users', array('invites' => 'invites-1', 'sentinvites' => 'sentinvites+1'), FALSE);
}

字段邀请和 sentinvites 都是整数，但均设置为0，此功能运行后。这使我presume是codeIgniter正在通过邀请-1 和 sentinvites + 1 为字符串，但我想追加 FALSE 到最后停止了它这样做？

The fields invites and sentinvites are both integers but are set to 0 after the function is run. This makes me presume that CodeIgniter is passing invites-1 and sentinvites+1 as strings, but I thought appending FALSE to the end stopped it doing that?

谢谢！

杰克

推荐答案

这不符合更新，只有设置。

$this->db->where('id', $userid);
$this->db->set('invites', 'invites-1', FALSE);
$this->db->set('sentinvites', 'sentinvites+1', FALSE);
$this->db->update('users');

$this->db->where('id', $userid);
$this->db->set(array('invites' => 'invites-1', 'sentinvites' => 'sentinvites+1'), FALSE);
$this->db->update('users');