public function img()
 {
     //实例化图像处理类,默认为GD库
     $image = new Image();
     //加载一张预处理的图片
     $image->open('./Public/images/1.jpg');
     //上面两句,可以用一句话包含
     //$image = new Image(Image::IMAGE_GD, './Public/images/1.jpg');
     //获取图片信息
     $arr['width'] = $image->width();
     $arr['height'] = $image->height();
     $arr['type'] = $image->type();
     $arr['mime'] = $image->mime();
     $arr['size'] = $image->size();
     //裁剪图片,高400,宽400
     $image->crop(400, 400)->save('./Public/images/1.jpg');
     $image->open('./Public/images/2.jpg');
     $image->thumb(300, 300, Image::IMAGE_THUMB_CENTER)->save('./Public/images/2.jpg');
     //在图片右下角添加水印并生成
     $image->open('./Public/images/3.jpg');
     $image->water('./Public/images/logo.png')->save('./Public/images/3.jpg');
     echo '<pre>' . print_r($arr, 1) . '</pre>';
 }
 /**
  *上传userInfo到数据库
  */
 public function userInfo()
 {
     $upload = new \Think\Upload();
     $upload->maxSize = 1000000;
     $upload->exts = array('jpg', 'png', 'jpeg');
     $upload->rootPath = './Public/Bzone/images/head-pic/';
     $upload->savePath = '';
     $upload->replace = 'true';
     $upload->saveName = 'time';
     $info = $upload->upload();
     if (!$info) {
         $this->error($upload->getError());
     } else {
         foreach ($info as $file) {
             $image = new Image();
             $image->open('./Public/Bzone/images/head-pic/' . $file['savepath'] . $file['savename']);
             $width = $image->width();
             $height = $image->height();
             if ($width <= 130 || $height <= 130) {
                 $image->crop(130, 130)->save('./Public/Bzone/images/head-pic/' . $file['savepath'] . $file['savename']);
             } else {
                 $image->thumb(130, 130)->save('./Public/Bzone/images/head-pic/' . $file['savepath'] . $file['savename']);
             }
             $data['info_pic'] = $file['savepath'] . $file['savename'];
             $data['info_selfintroduce'] = I('selfInfo');
             if (M('userinfo')->where(array('user_id' => session('userId')))->save($data)) {
                 redirect(U('Bzone/showFabu', '', ''));
             } else {
                 $this->error('上传失败');
             }
         }
     }
 }
 public function imginfo()
 {
     $path = './Public/images/demo.jpg';
     $image = new Image(Image::IMAGE_GD, $path);
     dump(['width' => $image->width(), 'height' => $image->height(), 'mime' => $image->mime(), 'type' => $image->type()]);
 }