<?php
  defined('BASEPATH') OR exit('No direct script access allowed');
  //上傳的參數(shù)配置
  $config['upload_path'] = './public/uploads/';
  $config['allowed_types'] = 'gif|png|jpg';
  $config['max_size'] = 100;
  $config['max_width'] = '1024';
  $config['max_height'] = '768';

<?php
defined('BASEPATH') OR exit('No direct script access allowed');
/**
 * 控制器
 */
class Brand extends Admin_Controller
{
  public function __construct()
  {
    parent::__construct();
    $this->load->model('brand_model');
    $this->load->library('form_validation');
    //激活分析器以調(diào)試程序
    $this->output->enable_profiler(TRUE);
    //配置中上傳的相關(guān)參數(shù)會自動加載
    $this->load->library('upload');
  }
}

public function insert()
{
  //設(shè)置驗證規(guī)則
  $this->form_validation->set_rules('brand_name','名稱','required');
  if($this->form_validation->run() == false){
    //未通過驗證
    $data['message'] = validation_errors();
    $data['wait'] = 3;
    $data['url'] = site_url('admin/brand/add');
    $this->load->view('message.html',$data);
  }else{
    //通過驗證，處理圖片上傳
    if ($this->upload->do_upload('logo')) { //logo為前端file控件名
      //上傳成功，獲取文件名
      $fileInfo = $this->upload->data();
      $data['logo'] = $fileInfo['file_name'];
      //獲取表單提交數(shù)據(jù)
      $data['brand_name'] = $this->input->post('brand_name');
      $data['url'] = $this->input->post('url');
      $data['brand_desc'] = $this->input->post('brand_desc');
      $data['sort_order'] = $this->input->post('sort_order');
      $data['is_show'] = $this->input->post('is_show');
      //調(diào)用模型完成添加動作
      if($this->brand_model->add_brand($data)){
        $data['message'] = "添加成功";
        $data['wait'] = 3;
        $data['url'] = site_url('admin/brand/index');
        $this->load->view('message.html',$data);
      }else{
        $data['message'] = "添加失敗";
        $data['wait'] = 3;
        $data['url'] = site_url('admin/brand/add');
        $this->load->view('message.html',$data);
      }
    }else{
      //上傳失敗
      $data['message'] = $this->upload->display_errors();
      $data['wait'] = 3;
      $data['url'] = site_url('admin/brand/add');
      $this->load->view('message.html',$data);
    }
  }
}

/**
 * Codeigniter框架實現(xiàn)多文件上傳
 * @author Zhihua_W
 * 方法一：對上傳的文件進(jìn)行循環(huán)處理
 */
public function multiple_uploads1()
{
  //載入所需文件上傳類庫
  $this->load->library('upload');
  //配置上傳參數(shù)
  $upload_config = array(
    'upload_path' => './public/uploads/',
    'allowed_types' => 'jpg|png|gif',
    'max_size' => '500',
    'max_width' => '1024',
    'max_height' => '768',
  );
  $this->upload->initialize($upload_config);
  //循環(huán)處理上傳文件
  foreach ($_FILES as $key => $value) {
    if (!empty($key['name'])) {
      if ($this->upload->do_upload($key)) {
        //上傳成功
        print_r($this->upload->data());
      } else {
        //上傳失敗
        echo $this->upload->display_errors();
      }
    }
  }
}

/**
 * Codeigniter框架實現(xiàn)多文件上傳
 * @author Zhihua_W
 * 方法二：直接一下將多個文件全部上傳然后在對上傳過的數(shù)據(jù)進(jìn)行處理
 */
public function multiple_uploads2()
{
  $config['upload_path'] = './public/uploads/';
  //這里的public是相對于index.php的,也就是入口文件,這個千萬不能弄錯!
  //否則就會報錯："The upload path does not appear to be valid.";
  $config['allowed_types'] = 'gif|jpg|png';
  //我試著去上傳其它類型的文件,這里一定要注意順序!
  //否則報錯："A problem was encountered while attempting to move the uploaded file to the final destination."
  //這個錯誤一般是上傳文件的文件名不能是中文名,這個很郁悶!還未解決,大家可以用其它方法,重新改一下文件名就可以解決了!
  //$config['allowed_types'] = 'zip|gz|png|gif|jpg';(正確)
  //$config['allowed_types'] = 'png|gif|jpg|zip|gz';(錯誤)
  $config['max_size'] = '1024';
  $config['max_width'] = '1024';
  $config['max_height'] = '768';
  $config['file_name'] = time(); //文件名不使用原始名
  $this->load->library('upload', $config);
  if (!$this->upload->do_upload()) {
    echo $this->upload->display_errors();
  } else {
    $data['upload_data'] = $this->upload->data(); //上傳文件的一些信息
    $img = $data['upload_data']['file_name']; //取得文件名
    echo $img . "<br>";
    foreach ($data['upload_data'] as $item => $value) {
      echo $item . ":" . $value . "<br>";
    }
  }
}