如何使用CodeIgniter框架实现图片上传的方法

class Upload extends CI_Controller{
  public function __construct(){
    parent::__construct();
    $this->load->helper("form","url");
  }
  public function index(){
    $this->load->view('test',array("error"=>''));
  }
  public function do_upload(){
    $config['upload_path']='./uploads/';
    $config['allowed_types']='gif|jpg|png';
    $config['max_size']=100;
    $config['max_width']=1024;
    $config['max_height']=768;
    $this->load->library('upload',$config);
    if(!$this->upload->do_upload('userfile')){
      $error=array('error'=>$this->upload->display_errors());
      $this->load->view('test',$error);
    }else{
      $data=array('upload_data'=>$this->upload->data());
      $this->load->view('upload_success',$data);
    }
  }
}

  
    
  

  
    
Your file was successfully uploaded!
    

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