php文件和图片上传类

<?php//文件和图片上传类/* 使用方法： function _upload($upload_dir){ $upload = new UploadFile(); //设置上传文件大小 $upload->maxSize=1024*1024*2;//最大2M //设置上传文件类型 $upload->allowExts = explode(',','jpg,gif,png,bmp'); //设置附件上传目录 $upload->savePath ='../images/'.$upload_dir."/"; $upload->saveRule = cp_uniqid; if(!$upload->upload()) { //捕获上传异常 $this->error($upload->getErrorMsg()); } else { //取得成功上传的文件信息 return $upload->getUploadFileInfo(); } } */class UploadFile{// 上传文件的最大值public $maxSize = -1;// 是否支持多文件上传public $supportMulti = true;// 允许上传的文件后缀// 留空不作后缀检查public $allowExts = array();// 允许上传的文件类型// 留空不做检查public $allowTypes = array();// 使用对上传图片进行缩略图处理public $thumb = false;// 缩略图最大宽度public $thumbMaxWidth;// 缩略图最大高度public $thumbMaxHeight;// 缩略图前缀public $thumbPrefix = 'thumb_';public $thumbSuffix = '';// 缩略图保存路径public $thumbPath = '';// 缩略图文件名public $thumbFile='';// 是否移除原图public $thumbRemoveOrigin = false;// 压缩图片文件上传public $zipImages = false;// 启用子目录保存文件public $autoSub = false;// 子目录创建方式 可以使用hash datepublic $subType = 'hash';public $dateFormat = 'Ymd';public $hashLevel = 1; // hash的目录层次// 上传文件保存路径public $savePath = '';public $autoCheck = true; // 是否自动检查附件// 存在同名是否覆盖public $uploadReplace = false;// 上传文件命名规则// 例如可以是 time uniqid com_create_guid 等// 必须是一个无需任何参数的函数名 可以使用自定义函数public $saveRule = '';// 上传文件Hash规则函数名// 例如可以是 md5_file sha1_file 等public $hashType = 'md5_file';// 错误信息private $error = '';// 上传成功的文件信息private $uploadFileInfo ;/** +---------------------------------------------------------- * 架构函数 +---------------------------------------------------------- * @access public +---------------------------------------------------------- */public function __construct($maxSize='',$allowExts='',$allowTypes='',$savePath='',$saveRule=''){if(!empty($maxSize) && is_numeric($maxSize)) {$this->maxSize = $maxSize;}if(!empty($allowExts)) {if(is_array($allowExts)) {$this->allowExts = array_map('strtolower',$allowExts);}else {$this->allowExts = explode(',',strtolower($allowExts));}}if(!empty($allowTypes)) {if(is_array($allowTypes)) {$this->allowTypes = array_map('strtolower',$allowTypes);}else {$this->allowTypes = explode(',',strtolower($allowTypes));}}if(!empty($savePath)) {$this->savePath = $savePath;}if(!empty($saveRule)) {$this->saveRule = $saveRule;}}private function save($file){$filename = $file['savepath'].$file['savename'];if(!$this->uploadReplace && is_file($filename)) {// 不覆盖同名文件$this->error='文件已经存在！'.$filename;return false;}// 如果是图像文件 检测文件格式if( in_array(strtolower($file['extension']),array('gif','jpg','jpeg','bmp','png','swf')) && false === getimagesize($file['tmp_name'])) {$this->error = '非法图像文件';return false;}if(!move_uploaded_file($file['tmp_name'], iconv('utf-8','gbk',$filename))) {$this->error = '文件上传保存错误！';return false;}if($this->thumb && in_array(strtolower($file['extension']),array('gif','jpg','jpeg','bmp','png'))) {$image = getimagesize($filename);if(false !== $image) {//是图像文件生成缩略图$thumbWidth=explode(',',$this->thumbMaxWidth);$thumbHeight=explode(',',$this->thumbMaxHeight);$thumbPrefix=explode(',',$this->thumbPrefix);$thumbSuffix = explode(',',$this->thumbSuffix);$thumbFile=explode(',',$this->thumbFile);$thumbPath = $this->thumbPath?$this->thumbPath:$file['savepath'];// 生成图像缩略图if(file_exists(dirname(__FILE__).'/Image.class.php')){require_once(dirname(__FILE__).'/Image.class.php');$realFilename = $this->autoSub?basename($file['savename']):$file['savename'];for($i=0,$len=count($thumbWidth); $i<$len; $i++) {$thumbname=$thumbPath.$thumbPrefix[$i].substr($realFilename,0,strrpos($realFilename, '.')).$thumbSuffix[$i].'.'.$file['extension'];Image::thumb($filename,$thumbname,'',$thumbWidth[$i],$thumbHeight[$i],true);}if($this->thumbRemoveOrigin) {// 生成缩略图之后删除原图unlink($filename);}}}}if($this->zipImags) {// TODO 对图片压缩包在线解压}return true;}/** +---------------------------------------------------------- * 上传文件 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $savePath 上传文件保存路径 +---------------------------------------------------------- * @return string +---------------------------------------------------------- * @throws ThinkExecption +---------------------------------------------------------- */public function upload($savePath =''){//如果不指定保存文件名，则由系统默认if(empty($savePath))$savePath = $this->savePath;// 检查上传目录if(!is_dir($savePath)) {// 检查目录是否编码后的if(is_dir(base64_decode($savePath))) {$savePath=base64_decode($savePath);}else{// 尝试创建目录if(!mkdir($savePath)){$this->error = '上传目录'.$savePath.'不存在';return false;}}}else {if(!is_writeable($savePath)) {$this->error = '上传目录'.$savePath.'不可写';return false;}}$fileInfo = array();$isUpload = false;// 获取上传的文件信息// 对$_FILES数组信息处理$files = $this->dealFiles($_FILES);foreach($files as $key => $file) {//过滤无效的上传if(!empty($file['name'])) {//登记上传文件的扩展信息$file['key'] = $key;$file['extension'] = $this->getExt($file['name']);$file['savepath'] = $savePath;$file['savename'] = $this->getSaveName($file);// 自动检查附件if($this->autoCheck) {if(!$this->check($file))return false;}//保存上传文件if(!$this->save($file)) return false;/* if(function_exists($this->hashType)) { $fun = $this->hashType; $file['hash'] = $fun(auto_charset($file['savepath'].$file['savename'],'utf-8','gbk')); } *///上传成功后保存文件信息，供其他地方调用unset($file['tmp_name'],$file['error']);$fileInfo[] = $file;$isUpload = true;}}if($isUpload) {$this->uploadFileInfo = $fileInfo;return true;}else {$this->error = '没有选择上传文件';return false;}}/** +---------------------------------------------------------- * 转换上传文件数组变量为正确的方式 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param array $files 上传的文件变量 +---------------------------------------------------------- * @return array +---------------------------------------------------------- */private function dealFiles($files) {$fileArray = array();foreach ($files as $file){if(is_array($file['name'])) {$keys = array_keys($file);$count = count($file['name']);for ($i=0; $i<$count; $i++) {foreach ($keys as $key)$fileArray[$i][$key] = $file[$key][$i];}}else{$fileArray=$files;}break;}return $fileArray;}/** +---------------------------------------------------------- * 获取错误代码信息 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $errorNo 错误号码 +---------------------------------------------------------- * @return void +---------------------------------------------------------- * @throws ThinkExecption +---------------------------------------------------------- */protected function error($errorNo){switch($errorNo) {case 1:$this->error = '上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值';break;case 2:$this->error = '上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值';break;case 3:$this->error = '文件只有部分被上传';break;case 4:$this->error = '没有文件被上传';break;case 6:$this->error = '找不到临时文件夹';break;case 7:$this->error = '文件写入失败';break;default:$this->error = '未知上传错误！';}return ;}/** +---------------------------------------------------------- * 根据上传文件命名规则取得保存文件名 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param string $filename 数据 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */private function getSaveName($filename){$rule = $this->saveRule;if(empty($rule)) {//没有定义命名规则，则保持文件名不变$saveName = $filename['name'];}else {if(function_exists($rule)) {//使用函数生成一个唯一文件标识号$saveName = $rule().".".$filename['extension'];}else {//使用给定的文件名作为标识号$saveName = $rule.".".$filename['extension'];}}if($this->autoSub) {// 使用子目录保存文件$saveName = $this->getSubName($filename).'/'.$saveName;}return $saveName;}/** +---------------------------------------------------------- * 获取子目录的名称 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param array $file 上传的文件信息 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */private function getSubName($file){switch($this->subType) {case 'date':$dir = date($this->dateFormat,time());break;case 'hash':default:$name = md5($file['savename']);$dir = '';for($i=0;$i<$this->hashLevel;$i++) {$dir .= $name{0}.'/';}break;}if(!is_dir($file['savepath'].$dir)) {mkdir($file['savepath'].$dir);}return $dir;}/** +---------------------------------------------------------- * 检查上传的文件 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param array $file 文件信息 +---------------------------------------------------------- * @return boolean +---------------------------------------------------------- */private function check($file) {if($file['error']!== 0) {//文件上传失败//捕获错误代码$this->error($file['error']);return false;}//检查文件Mime类型if(!$this->checkType($file['type'])) {$this->error = '上传文件MIME类型不允许！';return false;}//检查文件类型if(!$this->checkExt($file['extension'])) {$this->error ='上传文件类型不允许';return false;}//文件上传成功，进行自定义规则检查//检查文件大小if(!$this->checkSize($file['size'])) {$this->error = '上传文件大小超出限制！';return false;}//检查是否合法上传if(!$this->checkUpload($file['tmp_name'])) {$this->error = '非法上传文件！';return false;}return true;}/** +---------------------------------------------------------- * 检查上传的文件类型是否合法 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param string $type 数据 +---------------------------------------------------------- * @return boolean +---------------------------------------------------------- */private function checkType($type){if(!empty($this->allowTypes))return in_array(strtolower($type),$this->allowTypes);return true;}/** +---------------------------------------------------------- * 检查上传的文件后缀是否合法 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param string $ext 后缀名 +---------------------------------------------------------- * @return boolean +---------------------------------------------------------- */private function checkExt($ext){if(!empty($this->allowExts))return in_array(strtolower($ext),$this->allowExts,true);return true;}/** +---------------------------------------------------------- * 检查文件大小是否合法 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param integer $size 数据 +---------------------------------------------------------- * @return boolean +---------------------------------------------------------- */private function checkSize($size){return !($size > $this->maxSize) || (-1 == $this->maxSize);}/** +---------------------------------------------------------- * 检查文件是否非法提交 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param string $filename 文件名 +---------------------------------------------------------- * @return boolean +---------------------------------------------------------- */private function checkUpload($filename){return is_uploaded_file($filename);}/** +---------------------------------------------------------- * 取得上传文件的后缀 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param string $filename 文件名 +---------------------------------------------------------- * @return boolean +---------------------------------------------------------- */private function getExt($filename){$pathinfo = pathinfo($filename);return $pathinfo['extension'];}/** +---------------------------------------------------------- * 取得上传文件的信息 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @return array +---------------------------------------------------------- */public function getUploadFileInfo(){return $this->uploadFileInfo;}/** +---------------------------------------------------------- * 取得最后一次错误信息 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @return string +---------------------------------------------------------- */public function getErrorMsg(){return $this->error;}}//类定义结束?>

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