PHP adds watermark to pictures and generates thumbnails

1 Add watermark to pictures
2生成一个新的缩率图

    class Image{
        //水印配置项
        private $waterOn;
        private $waterImg;
        private $waterPos;
        private $waterPct;
        private $waterText;
        private $waterFont;
        private $waterTextSize;
        private $waterTextColor;
        private $qua;
        //缩略图配置项
        private $thumbWidth;
        private $thumbHeight;
        private $thumbType;
        private $thumbEndfix;
        //构造函数
        public function __construct(){
            $this->waterOn=C("WATER_ON");
            $this->waterImg=C("WATER_IMG");
            $this->waterPos=C("WATER_POS");
            $this->waterPct=C("WATER_PCT");
            $this->waterText=C("WATER_TEXT");
            $this->waterFont=C("WATER_FONT");
            $this->waterTextSize=C("WATER_TEXT_SIZE");
            $this->waterTextColor=C("WATER_TEXT_COLOR");
            $this->qua=C("WATER_QUA");
            //缩率图
            $this->thumbWidth=C("THUMB_WIDTH");
            $this->thumbHeight=C("THUMB_HEIGHT");
            $this->thumbType=C("THUMB_TYPE");
            $this->thumbEndFix=C("THUMB_ENDFIX");
            }
        /*
        *验证图片是否合法
        */
        private function check($img){
            return is_file($img)&&getimagesize($img)&&extension_loaded("gd");
            }
        /*
        *缩率图
        *@param string  $img         原图
        *@param string  $outFile     缩率之后存储的图片
        *@param int     $thumbWidth  缩率图宽度
        *@param int     $thumbHeight 缩率图高度
        *@param int     $thumbType   那种方式进行缩略处理
        */
        public function thumb($img,$outFile="",$thumbWidth="",$thumbHeight="",$thumbType=""){
            if(!$this->check($img)){
                return false;
                }
            //缩率图处理方式
            $thumbType=$thumbType?$thumbType:$this->thumbType;
            //缩率图宽度
            $thumbWidth=$thumbWidth?$thumbWidth:$this->thumbWidth;
            //缩率图高度
            $thumbHeight=$thumbHeight?$thumbHeight:$this->thumbHeight;
            //获取原图信息
            $imgInfo=getimagesize($img);
            //原图宽度
            $imgWidth=$imgInfo[0];
            //原图高度
            $imgHeight=$imgInfo[1];
            //获得原图类型
            $imgtype=image_type_to_extension($imgInfo[2]);
            //根据不同的缩略处理方式，获得尺寸(原图和缩略图相应的尺寸)
            $thumb_size=$this->thumbsize($imgWidth,$imgHeight,$thumbWidth,$thumbHeight,$thumbType);
            //创建原图
            $func="imagecreatefrom".substr($imgtype,1);//变量函数
            $resImg=$func($img);
            //创建缩率图画布
            if($imgtype==".gif"){
                $res_thumb=imagecreate($thumb_size[2],$thumb_size[3]);
                }else{
                    $res_thumb=imagecreatetruecolor($thumb_size[2],$thumb_size[3]);
                    }
            imagecopyresized($res_thumb,$resImg,0,0,0,0,$thumb_size[2],$thumb_size[3],$thumb_size[0],$thumb_size[1]);
            $fileInfo=pathinfo($img);//文件信息
            $outFile=$outFile?$outFile:$fileInfo['filename'].$this->thumbEndFix.$fileInfo['extension'];//文件名称
            $outFile=$fileInfo["dirname"]."/".$outFile;//加上目录
            $func="image".substr($imgtype,1);
            $func($res_thumb,$outFile);
            return $outFile;
            }
        private function thumbSize($imgWidth,$imgHeight,$thumbWidth,$thumbHeight,$thumbType){
            //缩率图尺寸
            $w=$thumbWidth;
            $h=$thumbHeight;
            //原图尺寸
            $img_w=$imgWidth;
            $img_h=$imgHeight;
            switch($thumbType){
                case 1:
                    //宽度固定，高度自增
                    $h=$w/$imgWidth*$imgHeight;
                    break;
                case 2://高度固定，宽度自
                    $w=$h/$imgHeight*$imgWidth;
                    break;
                case 3:
                    if($imgHeight/$thumbHeight>$imgWidth/$thumbWidth){
                        $img_h=$imgWidth/$thumbWidth*$thumbHeight;
                        }else{
                            $img_w=$imgHeight/$thumbHeight*$thumbWidth;
                            }
                }
                return array($img_w,$img_h,$w,$h);
            }
        /*
        *@param string  $img     原图
        *@param string  $outImg  加完水印后生成的图
        *@param int     $pos     水印位置
        *@param int     $pct     透明度
        *@param text    $text    水印文字
        *@param string  $waterImg水印图片
        */
        public function water($img,$outImg=null,$pos="",$pct="",$text="",$waterImg="",$textColor=""){
            if(!$this->check($img)){
                return false;
                }
            //加完水印后生成的图
            $outImg=$outImg?$outImg:$img;
            //水印位置
            $pos=$pos?$pos:$this->waterPos;
            //透明度
            $pct=$pct?$pct:$this->waterPct;
            //水印文字
            $text=$text?$text:$this->waterText;
            //水印图片
            $waterImg=$waterImg?$waterImg:$this->waterImg;
            //验证水印图片
            $waterImgOn=$this->check($waterImg);
            //水印文字颜色
            $textColor=$textColor?$textColor:$this->waterTextColor;
            //原图信息
            $imgInfo=getimagesize($img);
            //原图宽度
            $imgWidth=$imgInfo[0];
            //原图高度
            $imgHeight=$imgInfo[1];
            switch($imgInfo[2]){
                case 1:
                    $resImg=imagecreatefromgif($img);
                    break;
                case 2:
                    $resImg=imagecreatefromjpeg($img);
                    break;
                case 3:
                    $resImg=imagecreatefrompng($img);
                    break;
                }
            if($waterImgOn){//水印图片有效
                //水印信息
                $waterInfo=getimagesize($waterImg);
                //水印宽度
                $waterWidth=$waterInfo[0];
                //水印高度
                $waterHeight=$waterInfo[1];
                //根据不同的情况创建不同的类型 gif jpeg png
                $w_img=null;
                switch($waterInfo[2]){
                    case 1:
                        $w_img=imagecreatefromgif($waterImg);
                        break;
                    case 2:
                        $w_img=imagecreatefromjpeg($waterImg);
                        break;
                    case 3:
                        $w_img=imagecreatefrompng($waterImg);
                    }
                }else{//水印图片失效，使用文字水印
                    if(empty($text)||strlen($textColor)!==7){
                        return false;
                        }
                    //获得文字水印盒子信息
                    $textInfo=imagettfbbox($this->waterTextSize,0,$this->waterFont,$text);
                    //文字信息宽度
                    $textWidth=$textInfo[2]-$textInfo[6];
                    //文字信息高度
                    $textHeight=$textInfo[3]-$textInfo[7];
                    }
                //水印位置
                $x=$y=20;
                switch($pos){
                    case 1:
                        break;
                    case 2:
                        $x=($imgWidth-$waterWidth)/2;
                        break;
                    case 3:
                        $y=$imgWidth-$waterWidth-10;
                        break;
                    case 4:
                        $x=($imgHeight-$waterHeight)/2;
                        break;
                    case 5:
                        $x=($imgWidth-$waterWidth)/2;
                        $y=($imgHeight-$waterHeight)/2;
                        break;
                    case 6:
                        $x=$imgWidth-$waterWidth-10;
                        $y=($imgHeight-$waterHeight)/2;
                        break;
                    case 7:
                        $x=$imgHeight-$waterHeight-10;
                        break;
                    case 8:
                        $x=($imgWidth-$waterWidth)/2;
                        $y=$imgHeight-$waterHeight-10;
                        break;
                    case 9:
                        $x=$imgWidth-$waterWidth-10;
                        $y=$imgHeight-$waterHeight-10;
                        break;
                    default:
                        $x=mt_rand(20,$imgWidth-$waterWidth);
                        $y=mt_rand(20,$imgHeight-$waterHeight);
                    }
                if($waterImgOn){//当水印图片有效时，以图片形式加水印
                    if($waterInfo[2]==3){
                        imagecopy($resImg,$w_img,$x,$y,0,0,$waterWidth,$waterHeight);
                        }else{
                            imagecopymerge($resImg,$w_img,$x,$y,0,0,$waterInfo,$waterHeight,$pct);
                            }
                    }else{//水印图片失效，以文字水印加
                        $red=hexdec(substr($this->waterTextColor,1,2));
                        $greem=hexdec(substr($this->waterTextColor,3,2));
                        $blue=hexdec(substr($this->waterTextColor,5,2));
                        $color=imagecolorallocate($resImg,$red,$greem,$blue);
                        imagettftext($resImg,$this->waterTextSize,0,$x,$y,$color,$this->waterFont,$text);
                        }
                //输出图片
                switch($imgInfo[2]){
                        case 1:
                            imagegif($resImg,$outImg);
                            break;
                        case 2:
                            imagejpeg($resImg,$outImg);
                            break;
                        case 3:
                            imagepng($resImg,$outImg);
                            break;
                    }
                //垃圾回收
                if(isset($resImg)){
                    imagedestroy($resImg);
                    }
                if(isset($w_img)){
                    imagedestroy($w_img);
                    }
                return true;
            }
        }
?>

return array(
    //水印处理
    "WATER_ON"=>1,//水印开关
    "WATER_IMG"=>"./data/logo.png",//水印图片
    "WATER_POS"=>9,//水印位置
    "WATER_PCT"=>80,//水印透明度
    "WATER_TEXT"=>"http://www.caoxiaobin.cn",
    "WATER_FONT"=>"./data/simsunb.ttf",//水印字体
    "WATER_TEXT_COLOR"=>"#333333",//文字颜色 16进制表示
    "WATER_TEXT_SIZE"=>16,//文字大小
    "WATER_QUA"=>80,//图片压缩比
    //缩略图
    "THUMB_WIDTH"=>150,//缩率图宽度
    "THUMB_HEIGHT"=>150,//缩略图高度
    "THUMB_TYPE"=>1,//缩略图处理  1宽度固定，高度自增 2高度固定，宽度自增 //缩略图尺寸不变，对原图进行裁切
    "THUMB_ENDFIX"=>"_thmub"//缩略图后缀

);
?>

/*
 * Case-insensitive data key detection
 */
function array_key_exists_d($key,$arr){
 $_key=strtolower($key);
 foreach ($arr as $k= >$v){
 if($_key==strtolower($k)){
 return true;
 }
 }
}
/*
 * Recursively change the KEY (key name) of the array
 * @param array;
 * @stat int 0 lowercase 1 uppercase
 */
function array_change_key_case_d($arr,$stat=0){
 $func=$stat?"strtoupper":"strtolower";
 $_newArr=array();
 if (!is_array($arr)||empty($arr)){
 return $_newArr;
 }
 foreach($arr as $k=>$v){
 $_k=$func($k);/ /Convert KEY case through variable function
 $_newArr[$_k]= is_array($v)?array_change_key_case_d($v):$v;
 }
 return $_newArr;
}
/*
 * Read and set configuration Item
 * @param $name void Configuration item name, if not filled in, all configuration items will be returned
 * @param $value void Configuration item value
 * @param $value value false null Only take the $name value
 */
function C ($name=null,$value=null){
 static $config=array();//Static variable $config stores all configuration items
 if(is_null($name)){
 return $config;
 }
 / /If $name is an array
 if(is_array($name)){
 return $config=array_merge($config,array_change_key_case_d($name,1));
 }
 //Two cases where $name is a string$value No value means getting the value of the configuration item, value means changing the configuration item
 if(is_string($name)){
 $name= strtoupper($name);
 //Get the value of the configuration item
 if(is_null($value )){
 return array_key_exists_d($name,$config)?$config[$name]:null;
 }else{
 //Set value
 $config[$name]=$value;
 return true;
 }
 }
}

PHP, thumbnail image