PHP中的一個很好用的文件上傳類
Jun 13, 2016 am 10:58 AM
?
?class FileUpload{
?
? private $filepath; //設(shè)置上傳文件的路徑
? private $allowtype=array('jpg','jpeg','gif','bmp'); //默認的文件的類型
? private $maxsize=2000000;?? //默認文件的大小
? private $israndname=true; //是否使用隨機文件名
? private $originName;? //源文件名稱
? private $tmpFileName;? //臨時文件名
? private $fileType;??? //文件類型
? private $fileSize;?? //文件的大小
? private $newFileName;? //新文件的名稱
? private $errorNum;? //錯誤號
? private $errorMess=""; //用來提示錯誤報告
? //用于文件初始化的函數(shù)
? function __construct($options=array()){
?? foreach($options as $key=>$val){
??? $key=strtolower($key);//設(shè)置屬性名稱均為小寫
??? //get_class_vars(get_class($this))
??? //獲取當前類的所有的屬性
??? if(!in_array($key,get_class_vars(get_class($this)))){
???? continue;
??? }
??? else
??? {
???? $this->setOption($key,$val);
??? }
?? }
? }
? //定義不同的錯誤級別
? private function getError(){
?? $str="上傳文件{$this->originName}時出錯:";
?? switch($this->errorNum){
??? case 4:
???? $str.="文件沒有被上傳";
???? break;
??? case 3:
???? $str.="文件只有部分上傳";
???? break;
??? case 2:
???? $str.="上傳文件超過了HTML表單中規(guī)定的MAX_FILE_SIZE選項的值";
???? break;
??? case 1:
???? $str.="上傳文件吵過了php.ini中upload_max_filesize選項的值";
???? break;
??? case -1:
???? $str.="未允許的類型";
???? break;
??? case -2:
???? $str.="上傳文件過大,不能超過{$this->maxSize}個字節(jié)";
???? break;
??? case -3:
???? $str.="上傳失敗";
???? break;
??? case -4:
???? $str.="建立存放上傳目錄失敗,請重新指定上傳目錄";
???? break;
??? case -5:
???? $str.="必須指定上傳文件的路徑";
???? break;
??? default:
???? $str.="未知的錯誤";
?? }
?? return $str."
";
? }
? //為成員屬性賦值的函數(shù)
? private function setOption($key,$val){
?? $this->$key=$val;
? }
? //用于檢查上傳文件的路徑
? private function checkFilePath(){
?? //如果文件路徑為空
?? if(empty($this->filepath)){
??? $this->setOption('errorNum',-5);
??? return false;
?? }
?? //判斷路徑是否存在并且是否可寫
?? if(!file_exists($this->filepath)||!is_writable($this->filepath)){
??? //@是錯誤抑制符? @ 是忽略錯誤提示,使其錯
??? //誤消息不會顯示在程序里
??? if(!@mkdir($this->filepath,0755)){
???? $this->setOption('errorNum',-4);
???? return false;
??? }
?? }
?? return true;
? }
? //檢查文件大小的函數(shù)
? private function checkFileSize(){
?? if($this->fileSize>$this->maxsize){
??? $this->setOption("errorNum",-2);
??? return false;
?? }
?? else
?? {
??? return true;
?? }
?
? }
? //檢查上傳文件的類型
? private function checkFileType(){
?? if(in_array(strtolower($this->fileType),$this->allowtype))
?? {
??? return true;
?? }
?? else
?? {
??? $this->setOption("errorNum",-1);
??? return false;
?? }
? }
? //上傳一個文件
? function uploadFile($fileField){
?? $return=true;
?? $name=$_FILES[$fileField]["name"]; //post提交的名稱
?? $tmp_name=$_FILES[$fileField]["tmp_name"];? //上傳時的臨時文件名
?? $size=$_FILES[$fileField]["size"];
?? $error=$_FILES[$fileField]["error"];
?? if($this->setFiles($name,$tmp_name,$size,$error)){
??? if($this->checkFileSize() && $this->checkFileType()){
???? $this->setNewFileName();
???? if($this->copyFile())
???? {
????? $return=true;
???? }
???? else
???? {
????? $return=false;
???? }
??? }
??? else
??? {
???? $return=false;
??? }
?? }
?? else
?? {
??? $return=false;
?? }
?? //檢查文件的路徑是否存在錯誤
?? if(!$this->checkFilePath()){
??? $this->errorMess=$this->getError();
??? return false;
?? }
?? if(!$return)
?? {
??? $this->errorMess=$this->getError();
?? }
?? return $return;
? }
? //設(shè)置和$_FILES有關(guān)的內(nèi)容
? private function setFiles($name="",$tmp_name="",$size=0,$error=0){
?? $this->setOption("errorNum",$error);
?? if($this->errorNum){
??? return false;
?? }
?? $arrstr=explode(".",$name);
?? $this->setOption("fileType",strtolower($arrstr[count($arrstr)-1]));
?? $this->setOption("originName",$name);
?? $this->setOption("tmpFileName",$tmp_name);
?? $this->setOption("fileSize",$size);
?? return true;
? }
? //用于獲取上傳文件后文件的名稱
? function getNewFileName(){
?? return $this->newFileName.'上傳成功!';
? }
? //上傳文件失敗時,顯示錯誤信息的函數(shù)
? function getErrorMsg(){
?? return $this->errorMess;
? }
? private function proRandName(){
?? $filename=date("YmdHis").rand(100,999);
?? return $filename.".".$this->fileType;
? }
? //設(shè)置上傳后的文件名稱
? private function setNewFileName(){
?? if($this->israndname){
??? $this->setOption('newFileName',$this->proRandName());
?? }
?? else
?? {
??? $this->setOption('newFileName',$this->originName);
?? }
? }
? //拷貝文件
? private function copyFile(){
?? if(!$this->errorNum){
??? $filepath=rtrim($this->filepath,'/')."/";
??? $filepath.=$this->newFileName;
??? //將文件拷貝到指定的路徑當中
??? if(@move_uploaded_file($this->tmpFileName,$filepath)){
???? return true;
??? }
??? else
??? {
???? $this->setOption('errorNum',-3);
???? return false;
??? }
?? }
? }
?
?
?}
?>
?

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