php多文件上传，文件上传封装

/**
 * add by huangwenyuan 2011-7-27 多文件上传，返回一个数组，该数组内存放数组，每个数组包含文件上传的随机码文件名和真实文件名
 * Enter description here ...
 * @param unknown_type $formFilename
 * @param unknown_type $filePath
 * @param unknown_type $newFileName
 * @param unknown_type $fileTypeArray
 * @param unknown_type $fileMaxSize
 */
function filesUpload($formFilename, $filePath,
               $fileTypeArray= array('image/pjpeg','application/pdf'), $fileMaxSize = 2000000){

     $file_num = count($_FILES[$formFilename]['name']);//获取文件上传个数
  $msgPaths = array();
    
     for ($i = 0; $i < $file_num; $i++) {
      $file_name = $_FILES[$formFilename]['name'][$i];
  $file_type = $_FILES[$formFilename]['type'][$i];
  $file_temp = $_FILES[$formFilename]['tmp_name'][$i];
  $file_size = $_FILES[$formFilename]['size'][$i];
  $file_error = $_FILES[$formFilename]['error'][$i];
  
  if($file_error>0){
   $msg = 1;
      switch($file_error) {
             case 1: $msg = 2; break;
             case 2: $msg = 2; break;
             case 3: $msg = 3; break;
             case 4: $msg = -1; break;
         }
  }else if($file_size > $fileMaxSize){
   $msg = 2;
  }else if(! in_array($file_type, $fileTypeArray)){
   $msg = 4;
  }else if(! f_createDirN($filePath)){
   $msg = 5;
  }else{
   $ext = f_getExt($file_name); //扩展名
   $new_file_name = f_random().$ext;
 
   //$fileName = iconv("utf-8","gbk",$fileName); //处理中文乱码
   move_uploaded_file($file_temp, $filePath . iconv("utf-8","gbk",$new_file_name));   
   $msg = 0;
  }
  
  $msgPath = array(
      'filePath' => $filePath.$new_file_name,
   'fileName' =>$file_name
  );
  
  $msgPaths[$i] = $msgPath;
    }    

    return $msgPaths;
}