PHP上傳自動生成縮略圖及水印類(含代碼)_PHP教程
推薦：PHP技術(shù)：txtSQL安裝手冊中文版txtsql的最大優(yōu)點之一是文檔很詳細，可惜，我在網(wǎng)上找了半天也找不到中文版的文檔，所以只好自己動手，利人利已吧，不過自己的E文水平自己是很清楚的，希望大家看了不會笑掉大牙才好，還希望大家多多指教。 歡迎使用txtSQL 2.2快速安裝手冊。這頁將指引你如何
思路很大一部分是原創(chuàng)的，但也有一些是COPY網(wǎng)絡(luò)的，寫得不夠規(guī)范，還請各位大大不要見笑，同時給小弟些意見。
開始第一步：
創(chuàng)建文件夾，布局：
annex：附件（該目錄下存放上傳的原圖片）
|— smallimg：存放縮略圖片
|— mark：存放水印圖片
include：存放類文件，字體（本程序代碼使用的是：04B_08__.TTF）
|— upfile.php：集成簡單上傳，生成縮略圖及水印的類文件信息
|— 04B_08__.TTF：字體文件
test.php：測試文件
進入第二步：
代碼研究，希望各位能好好看看，小弟也是初學者，同時也希望各位能提出寶貴意見，小弟定會虛心領(lǐng)教的（寫得不好不要拿雞蛋砸偶噢）
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upfile.php
<?php
class UPImages {
var annexFolder = "annex";//附件存放點，默認為：annex
var smallFolder = "smallimg";//縮略圖存放路徑，注：必須是放在 annexFolder下的子目錄，默認為：smallimg
var markFolder = "mark";//水印圖片存放處
var upFileType = "jpg gif png";//上傳的類型，默認為：jpg gif png rar zip
var upFileMax = 1024;//上傳大小限制，單位是“KB”，默認為：1024KB
var fontType;//字體
var maxWidth = 500; //圖片最大寬度
var maxHeight = 600; //圖片最大高度
function UPImages(annexFolder,smallFolder,includeFolder) {
this->annexFolder = annexFolder;
this->smallFolder = smallFolder;
this->fontType = includeFolder."/04B_08__.TTF";
}
function upLoad(inputName) {
imageName = time();//設(shè)定當前時間為圖片名稱
if(@empty(_FILES[inputName]["name"])) die(error("沒有上傳圖片信息，請確認"));
name = explode(".",_FILES[inputName]["name"]);//將上傳前的文件以“.”分開取得文件類型
imgCount = count(name);//獲得截取的數(shù)量
imgType = name[imgCount-1];//取得文件的類型
if(strpos(this->upFileType,imgType) === false) die(error("上傳文件類型僅支持 ".this->upFileType." 不支持 ".imgType));
photo = imageName.".".imgType;//寫入數(shù)據(jù)庫的文件名
uploadFile = this->annexFolder."/".photo;//上傳后的文件名稱
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("上傳文件超過 ".this->upFileMax."KB"));
}
} else {
die(error("上傳圖片失敗，請確認你的上傳文件不超過 upFileMax KB 或上傳時間超時"));
}
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;//獲得圖片源
newName = substr(imgInfo["name"],0,strrpos(imgInfo["name"], "."))."_thumb.jpg";//新圖片名稱
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;
}
}
?>
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test.php
<?php
annexFolder = "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;//設(shè)置生成水印圖像值
img->toFile = true;
newSmallImg = img->smallImg(photo);
newMark = img->waterMark(photo,text);
echo "<img src='".newSmallImg."' border='0'><br><br>";
echo "<img src='".newMark."' border='0'><br><br>";
echo "<a href='./test.php'>繼續(xù)上傳</a>";
} else {
?>
<form method="post" action="./test.php?go=go" enctype="multipart/form-data">
<input type="file" name="upfile"><br><br>
<input type="submit" value="上傳">
</form>
<?php
}
?>
來源：網(wǎng)絡(luò)
分享：初學PHP指導：php.ini 配置詳細選項php.ini 或 php3.ini 是 PHP 在啟動時會讀取的配置文件。該文件的存放路徑為 /usr/local/lib/。在 PHP 3.x 版的配置文件為 php3.ini；而在 PHP 4.x 版改為 php.ini。若 PHP 安裝成服務(wù)器的模塊，則在 Web 服務(wù)器啟動執(zhí)行時會讀取，之后就不再讀取，因此改動
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PHP教程-PHP上傳自動生成縮略圖及水印類(含代碼)
。