codeigniter框架文件上传处理【黑马PHP培训】

//设置文件上传属性$webroot = $_SERVER['DOCUMENT_ROOT'];$time    = time();$year    = date('Y', $time);$month   = date('m', $time);$day     = date('d', $time);$subpath = "/goods/coverimage/{$year}/{$month}/{$day}/";$path    = $webroot . '/uploads' . $subpath;if(!file_exists($path)){        mkdir($path, 0777, true);}$config['upload_path']   = $path;$config['allowed_types'] = 'jpg|gif|png';$config['file_name']     = date('YmdHis', $time) . mt_rand(100, 999);$this->load->library('upload', $config);if($this->upload->do_upload('coverimage')){        $file           = $this->upload->data();        $data['image0'] = $subpath . $file['orig_name'];        if($this->goods_model->add_goods($data))        {                $this->success(base_url() . 'admin.php?c=goods', '添加商品成功', 2);        }}else //图片上传失败{        $msg               = array();        $msg['file_error'] = strip_tags($this->upload->display_errors());        $this->view('goods/modify', $msg);}从上面的代码可以看到用到了图片上传的3个函数：

$this->upload->do_upload('coverimage')$this->upload->data()$this->upload->display_errors()通过判断图片是否上传成功，来控制获取图片信息或输出相应的错误信息。