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The author:(作者)归海一刀published in(发表于) 2014/2/17 7:30:42 PHP实例：PHP上传自动生成缩略图及水印类_[PHP教程]
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）
-------------------------------------------------------------------------------upfile.php
class UPImages { var annexFolder = "annex";//附件存放点，默认为：annex 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 var markFolder = "mark";//水印图片存放处 var upFileType = "jpg gif png";//上传的类型，默认为：jpg gif png rar zip var upFileMax = 1024;//上传大小限制，单位是“KB”，默认为：1024KB var fontType;//字体 var maxWidth = 500; //图片最大宽度 var maxHeight = 600; //图片最大高度
function UPImages(annexFolder,smallFolder,includeFolder) { this->annexFolder = annexFolder; this->smallFolder = smallFolder; this->fontType = includeFolder."/04B_08__.TTF"; }
function upLoad(inputName) { imageName = time();//设定当前时间为图片名称 if(@empty(_FILES[inputName]["name"])) die(error("没有上传图片信息，请确认")); name = explode(".",_FILES[inputName]["name"]);//将上传前的文件以“.”分开取得文件类型 imgCount = count(name);//获得截取的数量 imgType = name[imgCount-1];//取得文件的类型 if(strpos(this->upFileType,imgType) === false) die(error("上传文件类型仅支持 ".this->upFileType." 不支持 ".imgType)); photo = imageName.".".imgType;//写入数据库的文件名 uploadFile = this->annexFolder."/".photo;//上传后的文件名称 upFileok = move_uploaded_file(_FILES[inputName]["tmp_name"],uploadFile); if(upFileok) { imgSize = _FILES[inputName]["size"]; kSize = round(imgSize/1024); if(kSize > (this->upFileMax*1024)) { @unlink(uploadFile); die(error("上传文件超过 ".this->upFileMax."KB")); } } else { 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")); } return photo; }
function getInfo(photo) { photo = this->annexFolder."/".photo; imageInfo = getimagesize(photo); imgInfo["width"] = imageInfo[0]; imgInfo["height"] = imageInfo[1]; imgInfo["type"] = imageInfo[2]; imgInfo["name"] = basename(photo); return imgInfo; }
function smallImg(photo,width=128,height=128) { imgInfo = this->getInfo(photo); photo = this->annexFolder."/".photo;//获得图片源 newName = substr(imgInfo["name"],0,strrpos(imgInfo["name"], "."))."_thumb.jpg";//新图片名称 if(imgInfo["type"] == 1) { img = imagecreatefromgif(photo); } elseif(imgInfo["type"] == 2) { img = imagecreatefromjpeg(photo); } elseif(imgInfo["type"] == 3) { img = imagecreatefrompng(photo); } else { img = ""; } if(empty(img)) return False;
width = (width > imgInfo["width"]) ? imgInfo["width"] : width; height = (height > imgInfo["height"]) ? imgInfo["height"] : height; srcW = imgInfo["width"]; srcH = imgInfo["height"]; if (srcW * width > srcH * height) { height = round(srcH * width / srcW); } else { width = round(srcW * height / srcH); } if (function_exists("imagecreatetruecolor")) { newImg = imagecreatetruecolor(width, height); ImageCopyResampled(newImg, img, 0, 0, 0, 0, width, height, imgInfo["width"], imgInfo["height"]); } else { newImg = imagecreate(width, height); ImageCopyResized(newImg, img, 0, 0, 0, 0, width, height, imgInfo["width"], imgInfo["height"]); }
if (this->toFile) { if (file_exists(this->annexFolder."/".this->smallFolder."/".newName)) @unlink(this->annexFolder."/".this->smallFolder."/".newName); ImageJPEG(newImg,this->annexFolder."/".this->smallFolder."/".newName); return this->annexFolder."/".this->smallFolder."/".newName; } else { ImageJPEG(newImg); } ImageDestroy(newImg); ImageDestroy(img); return newName; }
function waterMark(photo,text) { imgInfo = this->getInfo(photo); photo = this->annexFolder."/".photo; newName = substr(imgInfo["name"], 0, strrpos(imgInfo["name"], ".")) . "_mark.jpg"; switch (imgInfo["type"]) { case 1: img = imagecreatefromgif(photo); break; case 2: img = imagecreatefromjpeg(photo); break; case 3: img = imagecreatefrompng(photo); break; default: return False; } if (empty(img)) return False;
width = (this->maxWidth > imgInfo["width"]) ? imgInfo["width"] : this->maxWidth; height = (this->maxHeight > imgInfo["height"]) ? imgInfo["height"] : this->maxHeight; srcW = imgInfo["width"]; srcH = imgInfo["height"]; if (srcW * width > srcH * height) { height = round(srcH * width / srcW); } else { width = round(srcW * height / srcH); }
if (function_exists("imagecreatetruecolor")) { newImg = imagecreatetruecolor(width, height); ImageCopyResampled(newImg, img, 0, 0, 0, 0, width, height, imgInfo["width"], imgInfo["height"]); } else { newImg = imagecreate(width, height); ImageCopyResized(newImg, img, 0, 0, 0, 0, width, height, imgInfo["width"], imgInfo["height"]); } white = imageColorAllocate(newImg, 255, 255, 255); black = imageColorAllocate(newImg, 0, 0, 0); alpha = imageColorAllocateAlpha(newImg, 230, 230, 230, 40); ImageFilledRectangle(newImg, 0, height-26, width, height, alpha); ImageFilledRectangle(newImg, 13, height-20, 15, height-7, black); ImageTTFText(newImg, 4.9, 0, 20, height-14, black, this->fontType, text[0]); ImageTTFText(newImg, 4.9, 0, 20, height-6, black, this->fontType, text[1]);
if(this->toFile) { if (file_exists(this->annexFolder."/".this->markFolder."/".newName)) @unlink(this->annexFolder."/".this->markFolder."/".newName); ImageJPEG(newImg,this->annexFolder."/".this->markFolder."/".newName); return this->annexFolder."/".this->markFolder."/".newName; } else { ImageJPEG(newImg); } ImageDestroy(newImg); ImageDestroy(img); return newName; }}?>
-------------------------------------------------------------------------
test.phpannexFolder = "annex";smallFolder = "smallimg";markFolder = "mark";includeFolder = "include";
require("./".includeFolder."/upfile.php");img = new UPImages(annexFolder,smallFolder,includeFolder); text = array(www.dwww.cn,"all rights reserved");if(@_GET["go"]) { photo = img->upLoad("upfile"); img->maxWidth = img->maxHeight = 350;//设置生成水印图像值 img->toFile = true; newSmallImg = img->smallImg(photo); newMark = img->waterMark(photo,text); echo ""; echo ""; echo "继续上传";} else {?>
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