PHP上傳自動生成縮略圖及水印類(含代碼)

2024-05-04 21:52:57

字體：大中小

來源：轉載

供稿：網友

思路很大一部分是原創的，但也有一些是COPY網絡的，寫得不夠規范，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 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;
}

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.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：網絡