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| <?php /*
○︿
︶\
√ ﹀ . 。o O . ~~
=====================================================
= TITLE : CLASS clsUpload
= FILE : class_upload.php
= DESCRIPTION : To provide upload utility,
= AUTHOR : Peng Zhang zpregister()gmail.com
= http://blog.neten.de
= BASED ON : whxbb whxbb()21cn.com
= WRITED : 2005 NOV 20
= MODIFIED : 2006 MAR 01
= LICENCE : GPL
= REVISION : V1.0.2
=====================================================
*/
class clsUpload{
var $saveName;// 保存名
var $savePath;// 保存路径
var $fileFormat = array('gif','jpg','doc','application/octet-stream');// 文件格式&MIME限定
var $overwrite = 0;// 覆盖模式
var $maxSize = 0;// 文件最大字节
var $ext;// 文件扩展名
var $thumb = 0;// 是否生成缩略图
var $thumbWidth = 130;// 缩略图宽
var $thumbHeight = 130;// 缩略图高
var $thumbPrefix = "_thumb_";// 缩略图前缀
var $errno;// 错误代号
var $returnArray= array();// 所有文件的返回信息
var $returninfo= array();// 每个文件返回信息
// 构造函数
// @param $savePath 文件保存路径
// @param $fileFormat 文件格式限制数组
// @param $maxSize 文件最大尺寸
// @param $overwriet 是否覆盖 1 允许覆盖 0 禁止覆盖
function clsUpload($savePath, $fileFormat='',$maxSize = 0, $overwrite = 0) {
$this->setSavepath($savePath);
$this->setFileformat($fileFormat);
$this->setMaxsize($maxSize);
$this->setOverwrite($overwrite);
$this->setThumb($this->thumb, $this->thumbWidth,$this->thumbHeight);
$this->errno = 0;
}
// 上传
// @param $fileInput 网页Form(表单)中input的名称
// @param $changeName 是否更改文件名
function run($fileInput,$changeName = 1){
if(isset($_FILES[$fileInput])){
$fileArr = $_FILES[$fileInput];
if(is_array($fileArr['name'])){//上传同文件域名称多个文件
for($i = 0; $i < count($fileArr['name']); $i++){
$ar['tmp_name'] = $fileArr['tmp_name'][$i];
$ar['name'] = $fileArr['name'][$i];
$ar['type'] = $fileArr['type'][$i];
$ar['size'] = $fileArr['size'][$i];
$ar['error'] = $fileArr['error'][$i];
$this->getExt($ar['name']);//取得扩展名，赋给$this->ext，下次循环会更新
$this->setSavename($changeName == 1 ? '' : $ar['name']);//设置保存文件名
if($this->copyfile($ar)){
$this->returnArray[] = $this->returninfo;
}else{
$this->returninfo['error'] = $this->errmsg();
$this->returnArray[] = $this->returninfo;
}
}
return $this->errno ? false : true;
}else{//上传单个文件
$this->getExt($fileArr['name']);//取得扩展名
$this->setSavename($changeName == 1 ? '' : $fileArr['name']);//设置保存文件名
if($this->copyfile($fileArr)){
$this->returnArray[] = $this->returninfo;
}else{
$this->returninfo['error'] = $this->errmsg();
$this->returnArray[] = $this->returninfo;
}
return $this->errno ? false : true;
}
return false;
}else{
$this->errno = 10;
return false;
}
}
// 单个文件上传
// @param $fileArray 文件信息数组
function copyfile($fileArray){
$this->returninfo = array();
// 返回信息
$this->returninfo['name'] = $fileArray['name'];
$this->returninfo['saveName'] = $this->saveName;
$this->returninfo['size'] = number_format( ($fileArray['size'])/1024 , 0, '.', ' ');//以KB为单位
$this->returninfo['type'] = $fileArray['type'];
// 检查文件格式
if (!$this->validateFormat()){
$this->errno = 11;
return false;
}
// 检查目录是否可写
if(!@is_writable($this->savePath)){
$this->errno = 12;
return false;
}
// 如果不允许覆盖，检查文件是否已经存在
if($this->overwrite == 0 && @file_exists($this->savePath.$fileArray['name'])){
$this->errno = 13;
return false;
}
// 如果有大小限制，检查文件是否超过限制
if ($this->maxSize != 0 ){
if ($fileArray["size"] > $this->maxSize){
$this->errno = 14;
return false;
}
}
// 文件上传
if(!@copy($fileArray["tmp_name"], $this->savePath.$this->saveName)){
$this->errno = $fileArray["error"];
return false;
}elseif( $this->thumb ){// 创建缩略图
$CreateFunction = "imagecreatefrom".($this->ext == 'jpg' ? 'jpeg' : $this->ext);
$SaveFunction = "image".($this->ext == 'jpg' ? 'jpeg' : $this->ext);
if (strtolower($CreateFunction) == "imagecreatefromgif"
&& !function_exists("imagecreatefromgif")) {
$this->errno = 16;
return false;
} elseif (strtolower($CreateFunction) == "imagecreatefromjpeg"
&& !function_exists("imagecreatefromjpeg")) {
$this->errno = 17;
return false;
} elseif (!function_exists($CreateFunction)) {
$this->errno = 18;
return false;
}
$Original = @$CreateFunction($this->savePath.$this->saveName);
if (!$Original) {$this->errno = 19; return false;}
$originalHeight = ImageSY($Original);
$originalWidth = ImageSX($Original);
$this->returninfo['originalHeight'] = $originalHeight;
$this->returninfo['originalWidth'] = $originalWidth;
if (($originalHeight < $this->thumbHeight
&& $originalWidth < $this->thumbWidth)) {
// 如果比期望的缩略图小，那只Copy
copy($this->savePath.$this->saveName,
$this->savePath.$this->thumbPrefix.$this->saveName);
} else {
if( $originalWidth > $this->thumbWidth ){// 宽 > 设定宽度
$thumbWidth = $this->thumbWidth ;
$thumbHeight = $this->thumbWidth * ( $originalHeight / $originalWidth );
if($thumbHeight > $this->thumbHeight){// 高 > 设定高度
$thumbWidth = $this->thumbHeight * ( $thumbWidth / $thumbHeight );
$thumbHeight = $this->thumbHeight ;
}
}elseif( $originalHeight > $this->thumbHeight ){// 高 > 设定高度
$thumbHeight = $this->thumbHeight ;
$thumbWidth = $this->thumbHeight * ( $originalWidth / $originalHeight );
if($thumbWidth > $this->thumbWidth){// 宽 > 设定宽度
$thumbHeight = $this->thumbWidth * ( $thumbHeight / $thumbWidth );
$thumbWidth = $this->thumbWidth ;
}
}
if ($thumbWidth == 0) $thumbWidth = 1;
if ($thumbHeight == 0) $thumbHeight = 1;
$createdThumb = imagecreatetruecolor($thumbWidth, $thumbHeight);
if ( !$createdThumb ) {$this->errno = 20; return false;}
if ( !imagecopyresampled($createdThumb, $Original, 0, 0, 0, 0,
$thumbWidth, $thumbHeight, $originalWidth, $originalHeight) )
{$this->errno = 21; return false;}
if ( !$SaveFunction($createdThumb,
$this->savePath.$this->thumbPrefix.$this->saveName) )
{$this->errno = 22; return false;}
}
}
// 删除临时文件
if(!@$this->del($fileArray["tmp_name"])){
return false;
}
return true;
}
// 文件格式检查,MIME检测
function validateFormat(){
if(!is_array($this->fileFormat)
|| in_array(strtolower($this->ext), $this->fileFormat)
|| in_array(strtolower($this->returninfo['type']), $this->fileFormat) )
return true;
else
return false;
}
// 获取文件扩展名
// @param $fileName 上传文件的原文件名
function getExt($fileName){
$ext = explode(".", $fileName);
$ext = $ext[count($ext) - 1];
$this->ext = strtolower($ext);
}
// 设置上传文件的最大字节限制
// @param $maxSize 文件大小(bytes) 0:表示无限制
function setMaxsize($maxSize){
$this->maxSize = $maxSize;
}
// 设置文件格式限定
// @param $fileFormat 文件格式数组
function setFileformat($fileFormat){
if(is_array($fileFormat)){$this->fileFormat = $fileFormat ;}
}
// 设置覆盖模式
// @param overwrite 覆盖模式 1:允许覆盖 0:禁止覆盖
function setOverwrite($overwrite){
$this->overwrite = $overwrite;
}
// 设置保存路径
// @param $savePath 文件保存路径：以 "/" 结尾，若没有 "/"，则补上
function setSavepath($savePath){
$this->savePath = substr( str_replace("\\","/", $savePath) , -1) == "/"
? $savePath : $savePath."/";
}
// 设置缩略图
// @param $thumb = 1 产生缩略图 $thumbWidth,$thumbHeight 是缩略图的宽和高
function setThumb($thumb, $thumbWidth = 0,$thumbHeight = 0){
$this->thumb = $thumb;
if($thumbWidth) $this->thumbWidth = $thumbWidth;
if($thumbHeight) $this->thumbHeight = $thumbHeight;
}
// 设置文件保存名
// @param $saveName 保存名，如果为空，则系统自动生成一个随机的文件名
function setSavename($saveName){
if ($saveName == ''){ // 如果未设置文件名，则生成一个随机文件名
$name = date('YmdHis')."_".rand(100,999).'.'.$this->ext;
} else {
$name = $saveName;
}
$this->saveName = $name;
}
// 删除文件
// @param $fileName 所要删除的文件名
function del($fileName){
if(!@unlink($fileName)){
$this->errno = 15;
return false;
}
return true;
}
// 返回上传文件的信息
function getInfo(){
return $this->returnArray;
}
// 得到错误信息
function errmsg(){
$uploadClassError = array(
0 =>'There is no error, the file uploaded with success. ',
1 =>'The uploaded file exceeds the upload_max_filesize directive in php.ini.',
2 =>'The uploaded file exceeds the MAX_FILE_SIZE that was specified in the HTML form.',
3 =>'The uploaded file was only partially uploaded. ',
4 =>'No file was uploaded. ',
6 =>'Missing a temporary folder. Introduced in PHP 4.3.10 and PHP 5.0.3. ',
7 =>'Failed to write file to disk. Introduced in PHP 5.1.0. ',
10 =>'Input name is not unavailable!',
11 =>'The uploaded file is Unallowable!',
12 =>'Directory unwritable!',
13 =>'File exist already!',
14 =>'File is too big!',
15 =>'Delete file unsuccessfully!',
16 =>'Your version of PHP does not appear to have GIF thumbnailing support.',
17 =>'Your version of PHP does not appear to have JPEG thumbnailing support.',
18 =>'Your version of PHP does not appear to have pictures thumbnailing support.',
19 =>'An error occurred while attempting to copy the source image .
Your version of php ('.phpversion().') may not have this image type support.',
20 =>'An error occurred while attempting to create a new image.',
21 =>'An error occurred while copying the source image to the thumbnail image.',
22 =>'An error occurred while saving the thumbnail image to the filesystem.
Are you sure that PHP has been configured with both read and write access on this folder?',
);
if ($this->errno == 0)
return false;
else
return $uploadClassError[$this->errno];
}
}
?>
|