編寫還可以的php 圖片上傳類程式碼

<? 
//http://blog.csdn.net/enweitech
class upLoad{ 
public $length; //限定檔案大小 
public $file; //判斷此類是用於圖片上傳還是檔案上傳 
public $fileName; //檔名 
public $fileTemp; //上傳臨時檔案 
public $fileSize; //上傳檔案大小 
public $error; //上傳檔案是否有錯,php4沒有 
public $fileType; //上傳檔案型別 
public $directory; // 
public $maxLen; 
public $errormsg; 
function __construct($length,$file=true,$directory) 
{ 
$this->maxLen=$length; 
$this->length=$length*1024; 
$this->file=$file; //true為一般檔案，false為圖片的判斷 
$this->directory=$directory; 
} 
public function upLoadFile($fileField) 
{ 
$this->fileName=$fileField['name']; 
$this->fileTemp=$fileField['tmp_name']; 
$this->error=$fileField['error']; 
$this->fileType=$fileField['type']; 
$this->fileSize=$fileField['size']; 
$pathSign = DIRECTORY_SEPARATOR; // / 
if($this->file) //一般檔案上傳 
{ 
$path = $this->_isCreatedDir($this->directory);//取得路徑 
if($path)//http://blog.csdn.net/enweitech
{ 
$createFileType = $this->_getFileType($this->fileName);//設定檔案類別 
$createFileName=uniqid(rand()); //隨機產生檔名 
$thisDir=$this->directory.$pathSign.$createFileName.".".$createFileType; 
if(@move_uploaded_file($this->fileTemp,$thisDir)) //把臨時檔案移動到規定的路徑下 
{ 
return $thisDir; 
} 
} 
}else{ //圖片上傳 
$path = $this->_isCreatedDir($this->directory);//取得路徑 
if($path)//路徑存在//http://blog.csdn.net/enweitech
{ 
$createFileType = $this->_getFileType($this->fileName);//設定檔案類別 
$createFileName=uniqid(rand()); 
return @move_uploaded_file($this->fileTemp,$this->directory.$pathSign.$createFileName.".".$createFileType) ? true : false; 
} 
} 
} 
public function _isBig($length,$fsize) //返回檔案是否超過規定大小 
{ 
return $fsize>$length ? true : false; 
} 
public function _getFileType($fileName) //獲得檔案的字尾 
{ 
return end(explode(".",$fileName)); 
} 
public function _isImg($fileType) //上傳圖片型別是否允許 
{ 
$type=array("jpeg","gif","jpg","bmp"); 
$fileType=strtolower($fileType); 
$fileArray=explode("/",$fileType); 
$file_type=end($fileArray); 
return in_array($file_type,$type);//http://blog.csdn.net/enweitech
} 
public function _isCreatedDir($path) //路徑是否存在，不存在就建立 
{ 
if(!file_exists($path)) 
{ 
return @mkdir($path,0755)?true:false; //許可權755// 
} 
else 
{ 
return true; 
} 
} 
public function showError() //顯示錯誤資訊 
{//http://blog.csdn.net/enweitech
echo "<Script Language ='JavaScript'>\n history.back();\n alert(' $this->errormsg');\n </Script> \n"; 
exit(); 
} 
} 
class multiUpLoad extends upLoad{ 
public $FILES; 
function __construct($arrayFiles,$length,$file=true,$directory) 
{ 
$this->FILES=$arrayFiles; 
parent::__construct($length,$file,$directory); 
} 
function upLoadMultiFile() 
{ 
$arr=array(); 
if($this->_judge()||$this->_judge()=="no") //檔案全部符合規格,就開始上傳 
{ 
foreach($this->FILES as $key=>$value) 
{ 
$strDir=parent::upLoadFile($this->FILES[$key]); 
array_push($arr, $strDir); 
} 
//http://www.jb51.net 
return $arr; 
}else 
{ 
return false; 
} 
} 
function _judge() 
{ 
if($this->file) 
{ 
foreach($this->FILES as $key=>$value) 
{ 
if($this->_isBig($this->length,$value['size'])) 
{ 
$this->errormsg="檔案超過 $this->maxLen K"; 
parent::showError(); 
} 
if($value['error']=UPLOAD_ERR_NO_FILE) 
{ 
//$this->errormsg="上傳檔案出現錯誤"; 
//parent::showError(); 
return "no"; 
} 
} 
return true; 
}else 
{ 
//http://blog.csdn.net/enweitech
foreach($this->FILES as $key=>$value) 
{ 
if($this->_isBig($this->length,$value['size'])) 
{ 
$this->errormsg="圖片超過$this->maxLen"; 
parent::showError(); 
} 
if($value['error']!=0) 
{ 
$this->errormsg="上傳圖片出現錯誤"; 
parent::showError(); 
} 
if(!$this->_isImg($value['type'])) 
{ 
$this->errormsg="圖片格式不對"; 
parent::showError(); 
} 
} 
return true; 
} 
} 
} 
?> 

<?php 
class UPImages { 
var $annexFolder = "annex";//附件存放點，預設為：annex 
var $smallFolder = "smallimg";//縮圖存放路徑，注：必須是放在 $annexFolder下的子目錄，預設為：smallimg 
var $markFolder = "mark";//水印圖片存放處 
var $upFileType = "jpg gif png";//上傳的型別，預設為：jpg gif png rar zip 
var $upFileMax = 1024;//上傳大小限制，單位是“KB”，預設為：1024KB 
var $fontType;//字型 
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) { 
$imageName = time();//設定當前時間為圖片名稱 
if(@empty($_FILES[$inputName]["name"])) die(error("沒有上傳圖片資訊，請確認")); 
$name = explode(".",$_FILES[$inputName]["name"]);//將上傳前的檔案以“.”分開取得檔案型別 
$imgCount = count($name);//獲得擷取的數量 
$imgType = $name[$imgCount-1];//取得檔案的型別 
if(strpos($this->upFileType,$imgType) === false) die(error("上傳檔案型別僅支援 ".$this->upFileType." 不支援 ".$imgType)); 
$photo = $imageName.".".$imgType;//寫入資料庫的檔名 
$uploadFile = $this->annexFolder."/".$photo;//上傳後的檔名稱 
$upFileok = move_uploaded_file($_FILES[$inputName]["tmp_name"],$uploadFile); 
if($upFileok) { 
$imgSize = $_FILES[$inputName]["size"]; 
$kSize = round($imgSize/1024); 
if($kSize > ($this->upFileMax*1024)) { 
@unlink($uploadFile); 
die(error("上傳檔案超過 ".$this->upFileMax."KB")); 
} 
} else { 
die(error("上傳圖片失敗，請確認你的上傳檔案不超過 $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; 
} 
} 
?> 

<?php 
$annexFolder = "annex"; 
$smallFolder = "smallimg"; 
$markFolder = "mark"; 
$includeFolder = "include"; 
require("./".$includeFolder."/upfile.php"); 
$img = new UPImages($annexFolder,$smallFolder,$includeFolder); 
$text = array("blog.csdn.net/enweitech","all rights reserved"); 
if(@$_GET["go"]) { 
$photo = $img->upLoad("upfile"); 
$img->maxWidth = $img->maxHeight = 350;//設定生成水印影象值 
$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 
} 
?>