CI自带的文件上传及生成缩略图

时间：2023-03-10 02:31:14
CI自带的文件上传及生成缩略图 
   /*

    * 文件上传

    * @param  $upload_path 文件上传路径

    * @param  $formpic 表单name属性名称

    */

    private function doUpload($upload_path,$formpic){

        //配置

        //设置文件上传的路径

        $config['upload_path'] = $upload_path;

        //限制文件上传的类型

        $config['allowed_types'] = 'gif|jpg|png|jpeg';

        //限制文件上传的大小

        $config['max_size'] = '';

        //设置文件上传的路径

        $config['file_name'] = time() . mt_rand(,);

        //载入上传类

        $this->load->library('Upload', $config);

        //执行上传

        $status = $this->upload->do_upload($formpic);

    }

   /**

    * 生成缩略图

    * @param  $path 原图的本地路径

    * @param  $newPath 缩略图存储路径

    */

    private function dealthumb($path,$newPath,$width,$height){

        $config['image_library'] = 'gd2';

        $config['source_image'] = $path;

        $config['new_image'] = $newPath;

        $config['create_thumb'] = TRUE;

        //生成的缩略图将在保持纵横比例 在宽度和高度上接近所设定的width和height

        $config['maintain_ratio'] = TRUE;

        $config['width'] = $width;

        $config['height'] = $height;

        //载入图像处理类库

        $this->load->library('Image_lib');

        $this->image_lib->initialize($config);

        $this->image_lib->resize();

        $this->image_lib->clear();

    }

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