Question

我想从我的数据库表中获取大学ID。输入来自所选选项。

HTML

<li>
<h4>University with cost range</h4>
</li>
<select name="costing">
<option value="1" selected="less than 2 lacs">less than 2 lacs</option>
<option value="2">2 lacs - 4 lacs</option>
<option value="3">4.1 lacs - 6 lacs</option>
<option value="4">6.1 lacs - 8 lacs</option>
<option value="5">8.1 lacs - 10 lacs</option>
<option value="6">More than 10 lacs</option>
</select>
<input type="submit" value="Proceed" />
</form>

模型

   public function university_cost()
{
    $data = $this->input->post('costing');
    if($data == "1")
    {
    $this->db->select('U_ID')->from('cost')->where("Total_cost BETWEEN  00 AND 400000");  
    $subQuery =  $this->db->get_compiled_select();

    $this->db->select('U_ID, U_Name, Min_result_to_apply')
    ->from('university')
    ->where("U_ID IN ($subQuery)", NULL, FALSE);
    return $this->db->get()->result_array();      
    }
      if($data == "2")
    {
    $this->db->select('U_ID')->from('cost')->where("Total_cost BETWEEN  600000 AND 800000");  
    $subQuery =  $this->db->get_compiled_select();

    $this->db->select('U_ID, U_Name, Min_result_to_apply')
    ->from('university')
    ->where("U_ID IN ($subQuery)", NULL, FALSE);
    return $this->db->get()->result_array();      
    }

}

错误

<?php foreach($cost as $row1){?>
<tr >
   <td><?php echo `enter code here`$row1['U_ID']?></td>
   <td><?php echo $row1['U_Name']?></td> 
   <td><?php echo $row1['Min_result_to_apply']?></td>
<?php }?>

请帮忙。我尝试了几种方法，但是当我得到答案时，我得到了所有......就像所有的大学ID一样

控制器代码

 public function university_by_cost()
    {
        $this->load->model('university_model');
        $data5['cost'] = $this->university_model->university_cost();
        $this->load->view('cost_uni',$data5);
           }

错误页面

严重性：警告

消息：为foreach（）提供的参数无效

文件名：views / cost_uni.php

CodeIgniter，通过给定输入检查变量的值

0 个答案: