为图片加水印

composer require topthink/think-image

//【水印类库】

namespace app\api\classes;

use think\Image;

class imgWaterClass

{

   /**图片文字水印

    * object(think\Image)#47 (3) {

   ["im":protected] => resource(96) of type (gd)

   ["gif":protected] => NULL

   ["info":protected] => array(4) {

   ["width"] => int(750)

   ["height"] => int(450)

   ["type"] => string(4) "jpeg"

   ["mime"] => string(10) "image/jpeg"

   }

   }

    *

    */

   public function imageWaterText($path,$text){

       $img = ".".$path;

       $image = Image::open($img);

       $image->text($text,'./static/style/font/simsun.ttc',20,'#ffffff',9 ,"-10px")->save($img);

       return $img;

   }

   public function imageWaterImg($path,$logo){

       $img = ".".$path;

       $logo = ".".$logo;

       $image = Image::open($img);

       $image->water($logo,Image::WATER_SOUTHEAST)->save($img);

       return $img;

   }

}

后台程序处理

public function save(){

   $data = Request::param();

   $water = new imgWaterClass();

   $img_url = $data['face'];//需要添加水印的图片

   $path = "/uploads/logo.png";//水印图片

   $img = $water->imageWaterImg($img_url,$path);//添加水印图片

   $img_text = $water->imageWaterText($img_url,'我是水印');//添加水印文字

   if($img){

       return ['code'=>1,'msg'=>'保存成功'];

   }else{

       return ['code'=>0,'msg'=>'保存失败'];

   }

}