Codeigniter WHERE OR和Session中的数组

Question

我在session->userdata('usershop')中有以下数组：

Array
(
  [shop_chain] => 9001
  [shop_code] => 1
)
Array
(
  [shop_chain] => 9002
  [shop_code] => 1
)
Array
(
  [shop_chain] => 9001
  [shop_code] => 2
)
Array
(
  [shop_chain] => 9001
  [shop_code] => 3
)

我必须从另一个表中选择数据：

必须仅从此表中获取chain_code和shop_code匹配的行。

我试过了：

foreach ($this->session->userdata('usershop') as $usr => $usrshop) {
        $where = $this->db->where(array('chain_code' => $usrshop['shop_chain'], 'shop_code' => $usrshop['shop_code']));
    }
    return $this->db->get('wd2dbschema_config.cfg_shop')->result();

但所有这一切都是错误的行，结果就是这样：

SELECT * FROM "wd2dbschema_config"."cfg_shop" WHERE "chain_code" = '9001' AND "shop_code" = '1' AND "chain_code" = '9002' AND "shop_code" = '1' AND "chain_code" = '9001' AND "shop_code" = '2' AND "chain_code" = '9001' AND "shop_code" = '3'

我该怎么做才能只占用匹配的行？

像这样：

SELECT * FROM "wd2dbschema_config"."cfg_shop" WHERE ("chain_code" = '9001' AND "shop_code" = '1') OR ("chain_code" = '9002' AND "shop_code" = '1') OR ("chain_code" = '9001' AND "shop_code" = '2') OR ("chain_code" = '9001' AND "shop_code" = '3')

Answer 1

尝试

foreach ($this->session->userdata('usershop') as $usr => $usrshop) {
    $where = $this->db->where(array('chain_code' => $usrshop['shop_chain'], 'shop_code' => $usrshop['shop_code']));
    $data[] = $this->db->get('wd2dbschema_config.cfg_shop')->result();
}
return $data;

你要么执行每个where条件一次又需要在数组中捕获它们，并且在循环完成后你可以直接传递它。

Answer 2

使用活动记录可以这样做，确保将where()/or_where中的第二个参数传递为null，以便活动记录不会查找第一个参数的比较，第三个参数为FALSE，因此活动记录不会添加where子句表达式的附加bacticks

$i = 0;
foreach ($this->session->userdata('usershop') as $usr => $usrshop) {
    if($i==0){
        $this->db->where(" (chain_code = '" . $usrshop['shop_chain'] . "' AND shop_code = '" . $usrshop['shop_code'] . "') ", null, FALSE);
    }else{
        $this->db->or_where(" (chain_code = '" . $usrshop['shop_chain'] . "' AND shop_code = '" . $usrshop['shop_code'] . "') ", null, FALSE);
    }
    $i++;
}
return $this->db->get('wd2dbschema_config.cfg_shop')->result();