思路很大一部分是原创的，但也有一些是COPY网络的，写得不够规范，还请各位大大不要见笑，同时给小弟些意见。

开始第一步：
      创建文件夹，布局：
            annex：附件（该目录下存放上传的原图片）
                |— smallimg：存放缩略图片
                |— mark：存放水印图片
            include：存放类文件，字体（本程序代码使用的是：04B_08__.TTF）
                |— upfile.php：集成简单上传，生成缩略图及水印的类文件信息
                |— 04B_08__.TTF：字体文件
            test.php：测试文件

进入第二步：
     代码研究，希望各位能好好看看，小弟也是初学者，同时也希望各位能提出宝贵意见，小弟定会虚心领教的（写得不好不要拿鸡蛋砸偶噢）

 

 

  1-------------------------------------------------------------------------------
  2upfile.php
  3
  4<?php
  5class UPImages {
  6        var $annexFolder = "annex";//附件存放点，默认为：annex
  7        var $smallFolder = "smallimg";//缩略图存放路径，注：必须是放在 $annexFolder下的子目录，默认为：smallimg
  8        var $markFolder = "mark";//水印图片存放处
  9        var $upFileType = "jpg gif png";//上传的类型，默认为：jpg gif png rar zip
 10        var $upFileMax = 1024;//上传大小限制，单位是“KB”，默认为：1024KB
 11        var $fontType;//字体
 12        var $maxWidth = 500; //图片最大宽度 
 13        var $maxHeight = 600; //图片最大高度 
 14
 15        function UPImages($annexFolder,$smallFolder,$includeFolder) {
 16                $this->annexFolder = $annexFolder;
 17                $this->smallFolder = $smallFolder;
 18                $this->fontType = $includeFolder."/04B_08__.TTF";
 19        }
 20
 21        function upLoad($inputName) {
 22                $imageName = time();//设定当前时间为图片名称
 23                if(@empty($_FILES[$inputName]["name"])) die(error("没有上传图片信息，请确认"));
 24                $name = explode(".",$_FILES[$inputName]["name"]);//将上传前的文件以“.”分开取得文件类型
 25                $imgCount = count($name);//获得截取的数量
 26                $imgType = $name[$imgCount-1];//取得文件的类型
 27                if(strpos($this->upFileType,$imgType) === false) die(error("上传文件类型仅支持 ".$this->upFileType." 不支持 ".$imgType));
 28                $photo = $imageName.".".$imgType;//写入数据库的文件名
 29                $uploadFile = $this->annexFolder."/".$photo;//上传后的文件名称
 30                $upFileok = move_uploaded_file($_FILES[$inputName]["tmp_name"],$uploadFile);
 31                if($upFileok) {
 32                        $imgSize = $_FILES[$inputName]["size"];
 33                        $kSize = round($imgSize/1024);
 34                        if($kSize > ($this->upFileMax*1024)) {
 35                                @unlink($uploadFile);
 36                                die(error("上传文件超过 ".$this->upFileMax."KB"));
 37                        }
 38                } else {
 39                        die(error("上传图片失败，请确认你的上传文件不超过 $upFileMax KB 或上传时间超时"));
 40                }
 41                return $photo;
 42        }
 43
 44        function getInfo($photo) {
 45                $photo = $this->annexFolder."/".$photo;
 46                $imageInfo = getimagesize($photo);
 47                $imgInfo["width"] = $imageInfo[0];
 48                $imgInfo["height"] = $imageInfo[1];
 49                $imgInfo["type"] = $imageInfo[2];
 50                $imgInfo["name"] = basename($photo);
 51                return $imgInfo;
 52        }
 53
 54        function smallImg($photo,$width=128,$height=128) {
 55                $imgInfo = $this->getInfo($photo);
 56                $photo = $this->annexFolder."/".$photo;//获得图片源
 57                $newName = substr($imgInfo["name"],0,strrpos($imgInfo["name"], "."))."_thumb.jpg";//新图片名称
 58                if($imgInfo["type"] == 1) {
 59                        $img = imagecreatefromgif($photo);
 60                } elseif($imgInfo["type"] == 2) {
 61                        $img = imagecreatefromjpeg($photo);
 62                } elseif($imgInfo["type"] == 3) {
 63                        $img = imagecreatefrompng($photo);
 64                } else {
 65                        $img = "";
 66                }
 67                if(empty($img)) return False;
 68
 69                $width = ($width > $imgInfo["width"]) ? $imgInfo["width"] : $width; 
 70                $height = ($height > $imgInfo["height"]) ? $imgInfo["height"] : $height; 
 71                $srcW = $imgInfo["width"]; 
 72                $srcH = $imgInfo["height"]; 
 73                if ($srcW * $width > $srcH * $height) {
 74                        $height = round($srcH * $width / $srcW);
 75                } else {
 76                        $width = round($srcW * $height / $srcH);
 77                }
 78                if (function_exists("imagecreatetruecolor")) {
 79                        $newImg = imagecreatetruecolor($width, $height);
 80                        ImageCopyResampled($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);
 81                } else {
 82                        $newImg = imagecreate($width, $height);
 83                        ImageCopyResized($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);
 84                }
 85
 86                if ($this->toFile) {
 87                        if (file_exists($this->annexFolder."/".$this->smallFolder."/".$newName)) @unlink($this->annexFolder."/".$this->smallFolder."/".$newName);
 88                        ImageJPEG($newImg,$this->annexFolder."/".$this->smallFolder."/".$newName);
 89                        return $this->annexFolder."/".$this->smallFolder."/".$newName;
 90                } else {
 91                        ImageJPEG($newImg);
 92                }
 93                ImageDestroy($newImg);
 94                ImageDestroy($img);
 95                return $newName;
 96        }
 97
 98        function waterMark($photo,$text) {
 99                $imgInfo = $this->getInfo($photo);
100                $photo = $this->annexFolder."/".$photo;
101                $newName = substr($imgInfo["name"], 0, strrpos($imgInfo["name"], ".")) . "_mark.jpg";
102                switch ($imgInfo["type"]) {
103                        case 1:
104                                $img = imagecreatefromgif($photo);
105                        break;
106                        case 2:
107                                $img = imagecreatefromjpeg($photo);
108                        break;
109                        case 3:
110                                $img = imagecreatefrompng($photo);
111                        break;
112                        default:
113                                return False;
114                }
115                if (empty($img)) return False;
116
117                $width = ($this->maxWidth > $imgInfo["width"]) ? $imgInfo["width"] : $this->maxWidth; 
118                $height = ($this->maxHeight > $imgInfo["height"]) ? $imgInfo["height"] : $this->maxHeight; 
119                $srcW = $imgInfo["width"]; 
120                $srcH = $imgInfo["height"]; 
121                if ($srcW * $width > $srcH * $height) {
122                        $height = round($srcH * $width / $srcW);
123                } else {
124                        $width = round($srcW * $height / $srcH);
125                }
126
127                if (function_exists("imagecreatetruecolor")) {
128                        $newImg = imagecreatetruecolor($width, $height);
129                        ImageCopyResampled($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);
130                } else {
131                        $newImg = imagecreate($width, $height);
132                        ImageCopyResized($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);
133                }
134                
135                $white = imageColorAllocate($newImg, 255, 255, 255);
136                $black = imageColorAllocate($newImg, 0, 0, 0);
137                $alpha = imageColorAllocateAlpha($newImg, 230, 230, 230, 40);
138                ImageFilledRectangle($newImg, 0, $height-26, $width, $height, $alpha);
139                ImageFilledRectangle($newImg, 13, $height-20, 15, $height-7, $black);
140                ImageTTFText($newImg, 4.9, 0, 20, $height-14, $black, $this->fontType, $text[0]);
141                ImageTTFText($newImg, 4.9, 0, 20, $height-6, $black, $this->fontType, $text[1]);
142
143                if($this->toFile) {
144                        if (file_exists($this->annexFolder."/".$this->markFolder."/".$newName)) @unlink($this->annexFolder."/".$this->markFolder."/".$newName);
145                        ImageJPEG($newImg,$this->annexFolder."/".$this->markFolder."/".$newName);
146                        return $this->annexFolder."/".$this->markFolder."/".$newName;
147                } else {
148                        ImageJPEG($newImg);
149                }
150                ImageDestroy($newImg);
151                ImageDestroy($img);
152                return $newName;
153        }
154}
155?>
156
157-------------------------------------------------------------------------
158
159test.php
160<?php
161$annexFolder = "annex";
162$smallFolder = "smallimg";
163$markFolder = "mark";
164$includeFolder = "include";
165
166require("./".$includeFolder."/upfile.php");
167$img = new UPImages($annexFolder,$smallFolder,$includeFolder); 
168$text = array("www.qinggan.net","all rights reserved");
169if(@$_GET["go"]) {
170        $photo = $img->upLoad("upfile");
171        $img->maxWidth = $img->maxHeight = 350;//设置生成水印图像值
172        $img->toFile = true;
173        $newSmallImg = $img->smallImg($photo);
174        $newMark = $img->waterMark($photo,$text);
175        echo "<img src='".$newSmallImg."' border='0'><br><br>";
176        echo "<img src='".$newMark."' border='0'><br><br>";
177        echo "<a href='./test.php'>继续上传</a>";
178} else {
179?>
180<form method="post" action="./test.php?go=go" enctype="multipart/form-data">
181<input type="file" name="upfile"><br><br>
182<input type="submit" value="上传">
183</form>
184<?php
185}
186?>
187
188