Question

我從MySQL數據庫中獲取一些信息，並使用以下腳本（我使用Codeigniter）顯示它。

模式

public function sum($field, $table, $userfield, $username) 
    { 
     return $this->db->query("SELECT SUM($field) FROM $table WHERE $userfield = '$username'"); 
    } 

控制器

public function save(){ 
     $data = array(
     'sum_simpan' => $this->user_m->sum('besar_simpanan', 'simpanan', 'id', $this->session->userdata('username'))->result() 
    ); } 

查看

<div class="info-a"> 
     <p>Total Simpanan Anda</p> 
     <h3><?php 
      foreach ($sum_simpan as $row) { 
      echo $row->besar_simpanan; 
      } 
     ?> 
      </h3> 
    </div> 

我想要做的就是和內容並將其顯示在視圖中。 但是我得到一個錯誤

A PHP Error was encountered Severity: Notice

Message: Undefined property: stdClass::$besar_simpanan

Filename: anggota/simpanan.php

Line Number: 14

---

你請請告訴我該怎麼做。

感謝提前:)

Answer 1

更改模型這樣

public function sum($field, $table, $userfield, $username) 
    { 
     return $this->db->query("SELECT SUM($field) as total FROM $table WHERE $userfield = '$username'"); 
    } 

還認爲

<h3> 
<?php 
    foreach ($sum_simpan as $row) { 
      echo $row->total; 
    } 
?> 
</h3>