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thinkphp5学习笔记-图片处理

发布时间：2018-06-14 21:54:11编辑：雪饮阅读（）

同样依赖于:

use think\Validate;

模板中如:

<form method="post" enctype="multipart/form-data" action="{:url('picture')}">

<p>选择图像文件：<input type="file" name="image22"/></p>

<p>选择处理类型：</p>

<select name="type">

         <option value="1" selected>图片裁剪</option>

         <option value="2" selected>生成缩略图</option>

         <option value="3" selected>垂直翻转</option>

         <option value="4" selected>水平翻转</option>

         <option value="5" selected>图片旋转</option>

         <option value="6" selected>添加图片水印</option>

         <option value="7" selected>添加文字水印</option>

</select>

<p><input type="submit" value="提交"/></p>

</form>

控制器上对应方法如:

public function picture(Request $request){

         $file=input('file.image22');

         if(true !==$this->validate(['image22'=>$file],['image22'=>'require|image'])){

                   $this->error("请选择图像文件");

         }

         else{

                   $image=Image::open($file);

         }

         //图片处理

         switch ($request->param('type'))

         {

                   case 1:

                            //图片裁剪crop(裁剪宽度,裁剪高度,x坐标(默认0)，y坐标(默认0)

                            $image->crop(300,300,200,200);

                            break;

                   case 2:

                            //缩略图thumb(最大宽度,最大高度,裁剪类型)

                            $image->thumb(150,150,Image::THUMB_CENTER);

                            break;

                   case 3:

                            //垂直翻转

                            $image->flip();

                            break;

                   case 4:

                            //水平翻转(垂直翻转Image::FLIP_X=1,水平翻转Image::FLIP_Y=2)

                            $image->flip(Image::FLIP_Y);

                            break;

                   case 5:

                            //图片旋转rotate(顺时针旋转的度数)

                            $image->rotate(30);

                            break;

                   case 6:

                            //图片水印water(水印图片，水印位置常量(默认右下角)，水印透明度(默认100))

                            $image->water(ROOT_PATH.'logo.png',Image::WATER_NORTHWEST,50);

                            break;

                   case 7:

                            //文字水印 text(水印文字，字体文件路径，文字大小，文字颜色，文字写入位置，偏移量，文字倾斜角度)

                            $image->text('TPshop',VENDOR_PATH.'topthink/think-captcha/assets/ttfs/1.ttf',20,'#ffffff');

                            break;

         }

         //保存图片(以当前时间戳)

         $saveName=time().'.png';

         $image->save(ROOT_PATH.'public/uploads/'.$saveName);

         $this->success('图片处理完毕...','/uploads/'.$saveName,1);

}