<?php     //PHP 添加水印 & 比例缩略图 & 固定高度 & 固定宽度 类。    class Image_process{        public $source; //原图        public $source_width;   //原图宽度        public $source_height;  //原图高度        public $source_type_id;        public $orign_name;        public $orign_dirname;                //传入原图路径        public function __construct($source){            $this->typeList = array(1=>'gif',2=>'jpg',3=>'png');            $ginfo = getimagesize($source);            $this->source_width = $ginfo[0];            $this->source_height = $ginfo[1];            $this->source_type_id = $ginfo[2];            $this->orign_url = $source;            $this->orign_name = basename($source);            $this->orign_dirname = dirname($source);        }                //判断图片的文件的格式，返回PHP可识别的编码        public function judgeType($type,$source){            if($type == 1){                return imagecreatefromgif($source); //gif            }else if($type == 2){                return imagecreatefromjpeg($source); //jpg            }else if($type == 3){                return imagecreatefrompng($source); //png            }else{                return false;            }        }                //生成水印图片        public function waterMakeImage($logo){            $linfo = getimagesize($logo);            $logo_width = $linfo[0];            $logo_height = $linfo[1];            $logo_type_id = $linfo[2];            $sourceHandle = $this->judgeType($this->source_type_id,$this->orign_url);            $logoHandle = $this->judgeType($logo_type_id,$logo);            if(!$sourceHandle || !$logoHandle){                return false;            }            $x = ($this->source_width - $logo_width)/2;            $y = ($this->source_height - $logo_height)/2;            imagecopy($sourceHandle,$logoHandle,$x,$y,0,0,$logo_width,$logo_height);            $newPic = $this->orign_dirname.'\water_'.time().'.'.$this->typeList[$this->source_type_id];            if($this->saveImage($sourceHandle,$newPic)){                imagedestroy($sourceHandle);                imagedestroy($logoHandle);            }        }                //固定高度宽度        public function fixSizeImage($width,$height){            if($width > $this->source_width) $this->source_width;            if($height > $this->source_height) $this->source_height;            if($width === false){                $width = floor($this->source_width / ($this->source_height / $height));            }            if($height === false){                $height = floor($this->source_height / ($this->source_width / $width));            }            $this->tinyImage($width,$height);        }                //等比例缩放图片        public function scaleImage($scale){            $width = floor($this->source_width * $scale);            $height = floor($this->source_height * $scale);            $this->tinyImage($width, $height);        }                //创建缩略图        public function tinyImage($width,$height){            $tinyImage = imagecreatetruecolor($width,$height);            $handle = $this->judgeType($this->source_type_id,$this->orign_url);            if(function_exists('imagecopyresampled')){                imagecopyresampled($tinyImage, $handle, 0, 0, 0, 0, $width, $height, $this->source_width, $this->source_height);            }else{                imagecopyresized($tinyImage, $handle, 0, 0, 0, 0, $width, $height, $this->source_width, $this->source_height);            }            $newPic = $this->orign_dirname.'\thumb_'.time().'_'.$width."_".$height.".".$this->typeList[$this->source_type_id];            if($this->saveImage($tinyImage,$newPic)){                imagedestroy($tinyImage);                imagedestroy($handle);            }        }        //保存图片        private function saveImage($image,$url){            if(imagejpeg($image,$url)){                return true;            }        }    }    $imgHandle = new Image_process('D:\AppServ\www\test\getimg\14061907445601.jpg');    //$imgHandle->waterMakeImage('D:\AppServ\www\test\getimg\shougongke.png');   //生成水印图片    //$imgHandle->fixSizeImage(200,150); //固定长度图片    $imgHandle->scaleImage(0.2); //等比例缩放    ?>