[导入]php上传自动生成缩略图及水印类

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）

-------------------------------------------------------------------------------
2

upfile.php
3

<?php
5

class 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

function UPImages($annexFolder,$smallFolder,$includeFolder) {
16

$this->annexFolder = $annexFolder;
17

$this->smallFolder = $smallFolder;
18

$this->fontType = $includeFolder."/04B_08__.TTF";
19

}
20

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

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

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

$width = ($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

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

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

159

test.php
160

<?php
161

$annexFolder = "annex";
162

$smallFolder = "smallimg";
163

$markFolder = "mark";
164

$includeFolder = "include";
165

166

require("./".$includeFolder."/upfile.php");
167

$img = new UPImages($annexFolder,$smallFolder,$includeFolder);
168

if(@$_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

besthost 2008-04-10 16:44 发表评论

文章来源:http://www.phpweblog.net/fuyongjie/archive/2008/04/10/3175.html

posted @ 2008-04-10 16:44 宇风阅读(351) 评论(0) 收藏举报

所有博文如无特别注明，均转载自网络

[导入]php上传自动生成缩略图及水印类

公告