CI框架实现优化文件上传及多文件上传的方法

<?php
  defined('BASEPATH') OR exit('No direct script aess allowed');
  //上传的参数配置
  $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 aess allowed');
/
  控制器
 /
class Brand extends Admin_Controller
{
  public function __construct()
  {
    parent::__construct();
    $this->load->model('brand_model');
    $this->load->library('form_validation');
    //激活分析器以调试程序
    $this->output->enable_profiler(TRUE);
    //配置中上传的相关参数会自动加载
    $this->load->library('upload');
  }
}

public function insert()
{
  //设置验证规则
  $this->form_validation->set_rules('brand_name','名称','required');
  if($this->form_validation->run() == false){
    //未通过验证
    $data['message'] = validation_errors();
    $data['wait'] = 3;
    $data['url'] = site_url('admin/brand/add');
    $this->load->view('message.html',$data);
  }else{
    //通过验证，处理图片上传
    if ($this->upload->do_upload('logo')) { //logo为前端file控件名
      //上传成功，获取文件名
      $fileInfo = $this->upload->data();
      $data['logo'] = $fileInfo['file_name'];
      //获取表单提交数据
      $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'] = $this->input->post('is_show');
      //调用模型完成添加动作
      if($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'] = "添加失败";
        $data['wait'] = 3;
        $data['url'] = site_url('admin/brand/add');
        $this->load->view('message.html',$data);
      }
    }else{
      //上传失败
      $data['message'] = $this->upload->display_errors();
      $data['wait'] = 3;
      $data['url'] = site_url('admin/brand/add');
      $this->load->view('message.html',$data);
    }
  }
}

/
  Codeigniter框架实现多文件上传
  @author Zhihua_W
  方法一对上传的文件进行循环处理
 /
public function multiple_uploads1()
{
  //载入所需文件上传类库
  $this->load->library('upload');
  //配置上传参数
  $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);
  //循环处理上传文件
  foreach ($_FILES as $key => $value) {
    if (!empty($key['name'])) {
      if ($this->upload->do_upload($key)) {
        //上传成功
        print_r($this->upload->data());
      } else {
        //上传失败
        echo $this->upload->display_errors();
      }
    }
  }
}

/
  Codeigniter框架实现多文件上传
  @author Zhihua_W
  方法二直接一下将多个文件全部上传然后在对上传过的数据进行处理
 /
public function multiple_uploads2()
{
  $config['upload_path'] = './public/uploads/';
  //这里的public是相对于index.php的,也就是入口文件,这个千万不能弄错!
  //否则就会报错"The upload path does not appear to be valid.";
  $config['allowed_types'] = 'gif|jpg|png';
  //我试着去上传其它类型的文件,这里一定要注意顺序!
  //否则报错"A problem was encountered while attempting to move the uploaded file to the final destination."
  //这个错误一般是上传文件的文件名不能是中文名,这个很郁闷!还未解决,大家可以用其它方法,重新改一下文件名就可以解决了!
  //$config['allowed_types'] = 'zip|gz|png|gif|jpg';(正确)
  //$config['allowed_types'] = 'png|gif|jpg|zip|gz';(错误)
  $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(); //上传文件的一些信息
    $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>";
    }
  }
}