<?phpclass FileUpload_Single{//user define -------------------------------------var $accessPath ;var $fileSize=200;var $defineTypeList="jpg|jpeg|gif|bmp";//string jpg|gif|bmp ...var $filePrefix= "useruplod_";//上傳后的文件名前綴，可設(shè)置為空var $changNameMode;//圖片改名的規(guī)則，暫時只有三類，值范圍 : 0 至 2 任一值var $uploadFile;//array upload file attributevar $newFileName;var $error;function TODO(){//main　主類:設(shè)好參數(shù)，可以直接調(diào)用$pass = true ;if ( ! $this -> GetFileAttri() ){  $pass = false;}if( ! $this -> CheckFileMIMEType() ) { $pass = false; $this -> error .= die("<script language=/"javascript/">alert('圖片類型不正確，允許格式：jpg｜jpeg｜gif｜bmp。');history.back()</script>");}if( ! $this -> CheckFileAttri_size() ){  $pass = false;  $this -> error .= die("<script language=/"javascript/">alert('上傳的文件太大，請確保在200K以內(nèi)。');history.back()</script>");  return false;}if ( ! $this -> MoveFileToNewPath() ){  $pass = false;  $this -> error .= die("<script language=/"javascript/">alert('上傳失敗！文件移動發(fā)生錯誤！');history.back()</script>");}  return $pass;}function GetFileAttri(){ foreach( $_FILES as $tmp ) {  $this -> uploadFile = $tmp; } return (empty( $this -> uploadFile[ 'name' ])) ? false : true;}function CheckFileAttri_size(){ if ( ! empty ( $this -> fileSize )) {  if ( is_numeric( $this -> fileSize ))  {  if ($this -> fileSize > 0)  {   return ($this -> uploadFile[ 'size' ] > $this -> fileSize * 1024) ? false : true ;  }   }  else  {  return false;  } } else {  return false; } } function ChangeFileName ($prefix = NULL , $mode) {// string $prefix , int $mode $fullName = (isset($prefix)) ? $prefix."_" : NULL ; switch ($mode) {  case 0  : $fullName .= rand( 0 , 100 ). "_" .strtolower(date ("ldSfFYhisa")) ; break;  case 1  : $fullName .= rand( 0 , 100 ). "_" .time(); break;  case 2  : $fullName .= rand( 0 , 10000 ) . time();  break;  default : $fullName .= rand( 0 , 10000 ) . time();  break; } return $fullName; } function MoveFileToNewPath() { $newFileName = NULL; $newFileName = $this -> ChangeFileName( $this -> filePrefix , 2 ). "." . $this -> GetFileTypeToString(); //檢查目錄是否存在,不存在則創(chuàng)建，當(dāng)時我用的時候添加了這個功能，覺得沒用的就注釋掉吧 /* $isFile = file_exists( $this -> accessPath); clearstatcache();  if( ! $isFile && !is_dir($this -> accessPath) )  {    echo $this -> accessPath;  @mkdir($this -> accessPath);  }*/$array_dir=explode("/",$this -> accessPath);//把多級目錄分別放到數(shù)組中 for($i=0;$i<count($array_dir);$i++){ $path .= $array_dir[$i]."/"; if(!file_exists($path)){  mkdir($path); } }/////////////////////////////////////////////////////////////////////////////////////////////////  if ( move_uploaded_file( $this -> uploadFile[ 'tmp_name' ] , realpath( $this -> accessPath ) . "/" .$newFileName ) )  {    $this -> newFileName = $newFileName;      return true;  }else{    return false;  }/////////////////////////////////////////////////////////////////////////////////////////////////}function CheckFileExist( $path = NULL) { return ($path == NULL) ? false : ((file_exists($path)) ? true : false); }function GetFileMIME() { return $this->GetFileTypeToString(); }function CheckFileMIMEType() { $pass = false; $defineTypeList = strtolower( $this ->defineTypeList); $MIME = strtolower( $this -> GetFileMIME()); if (!empty ($defineTypeList)) {  if (!empty ($MIME))  {  foreach(explode("|",$defineTypeList) as $tmp)  {   if ($tmp == $MIME)   {   $pass = true;   }  }  }  else  {  return false;  }     }  else  {  return false;  }  return $pass; } function GetFileTypeToString() { if( ! empty( $this -> uploadFile[ 'name' ] ) ) {  return substr( strtolower( $this -> uploadFile[ 'name' ] ) , strlen( $this -> uploadFile[ 'name' ] ) - 3 , 3 );  } }}?>

 <?phpinclude 'up.class.php';//加載PHP上傳類文件if (empty($HTTP_POST_FILES['image_file']['tmp_name']))//判斷接收數(shù)據(jù)是否為空{(diào)    $tmp = new FileUpload_Single;    $tmp -> accessPath ='upload';//圖片上傳的目錄，這里是當(dāng)前目錄下的upload目錄，可自己修改    if ( $tmp -> TODO() )    {      $filename=$tmp -> newFileName;//生成的文件名      echo "圖片上傳成功，路徑為：upload/".$filename;    }else{      echo $tmp -> error;    }     }else{  echo "沒有圖片數(shù)據(jù)可上傳";}?>