<?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 date public $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 ?>
