php - 如何在 codeigniter 中使用插入或替换

Question

 public function save($data, $id)
    {
      $this->db->insert OR REPLACE($this->table, $data);
      return $this->db->insert_id();
    }

如果数据不存在则插入，否则数据存在则替换

Answer 1

试试这个

Check Unique data filed to check where record exist

public function save($data, $id)
{
    $query = $this->db->query("SELECT * FROM table_name WHERE id = '{$data['id']}' ");
    $result = $query->result_array();
    $count = count($result);

    if (empty($count)) {

        $this->db->insert('mytable', $data); 
    }
    elseif ($count == 1) {
        $this->db->where('id', $data['id']);
        $this->db->update('mytable', $data); 
    }
}