图片添加文字水印和图片水印

php
    /**
     * @desc 图片处理类
     */
     class Pic{
        private $info;
        private $res;
        public $thumb_pic;
        public function __construct($picPath){
            //获取图片信息
            $this->info = getimagesize($picPath);
            //获取图片名
            $this->info['type'] = image_type_to_extension($this->info[2],false);
            $funs = 'imagecreatefrom'.$this->info['type'];
            $this->res = $funs($picPath);
        }
        //缩略图
        public function thumb($w=100,$h=100){
            //创建图片资源
            $image_thumb = imagecreatetruecolor($w,$h);
            imagecopyresampled($image_thumb,$this->res,0,0,0,0,$w,$h,$this->info[0],$this->info[1]);
            imagedestroy($this->res);
            $this->res = $image_thumb;
        }

        //展示
        public function showPic(){
            header('Content-type:'.$this->info['type']);
            $funs = 'image'.$this->info['type'];
            $funs($this->res);
        
        }
        
        //保存
        public function savePic($newname){
            $funs = 'image'.$this->info['type'];
            $funs($this->res,$newname.".".$this->info['type']);
        
        
        }
        
        //销毁图片
        public function __destruct(){
            imagedestroy($this->res);
        
        }
        /**
         * @desc  添加文字水印
         * @param $content string    文字
         * @param $fonturl string     字体路径
         * @param $fontsize int       字体大小
         * @param $fontcolor array     设置颜色和透明度
         * @param $local array      水印坐标
         * @param $fontangle int    字体旋转角度
         */
        public function fontMark($content,$fonturl,$fontsize,$fontcolor,$local,$fontangle){
            $color = imagecolorallocatealpha($this->res,$fontcolor[0],$fontcolor[1],$fontcolor[2],$fontcolor[3]);
            imagettftext($this->res,$fontsize,$fontangel,$local['x'],$local['y'],$color,$fonturl,$content);
        
        }
        /**
         * @desc  添加图片水印
         * @param $markPic string 水印图片
         * @param $local array     图片坐标
         * @param $alpha array     设置颜色和透明度
         */
        public function picMark($markPic,$local,$alpha){
            $markInfo = getimagesize($markPic);
            $markType = image_type_to_extension($markInfo[2],false);
            $markFun = 'imagecreatefrom'.$markType;
            $markWater = $markFun($markPic);
            imagecopymerge($this->res,$markWater,$local['x'],$local['y'],0,0,$markInfo[0],$markInfo[1],$alpha);
            imagedestroy($markWater);
        
        }
     }
     $pic = new Pic('yibo_pic28.jpg');
     $pic->picMark('logo3.png',array('x'=>50,'y'=>50),30);
     $pic->showPic();

以上就介绍了图片添加文字水印 和图片水印，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。