PHP 文件上传后端处理实用技巧方法

 //点击选择完成文件后，触发上传文件操作，将文件上传至服务器临时目录
  $('.upload-real-file').off().on('change', function(){
   if(!$(this).val()){
    return false;
   }
   var responseObjId = $(this).attr('response-id');
   var responseObj = $('#' + responseObjId);
   $('#Form').ajaxSubmit({
    url:'/aa/bb/uploadTmpApkTool',
    resetForm: false,
    dataType: 'json',
    beforeSubmit: function(option){
     window.loading = layer.load(2);
    },
    success: function(data, statusText){
     layer.close(window.loading);
     if(data.status == 1){
      responseObj.html(data.apkInfoHtml);
      var parentContainer = responseObj.parent().parent(),
       nameContainer = parentContainer.find('.file-name-container');
      nameContainer.html(data.apkName);
      nameContainer.attr('title', data.apkName);
      responseObj.find('.file-tmp').html(data.fileInfo); //将文件信息存放于隐藏域中，以便在提交时能找到 
      $(submitId).removeAttr('disabled');
     }else{
      layer.alert(data.info);
     }
    },
    error: function(data){
     layer.close(window.loading);
     layer.alert('未知错误，请稍后再试！');
    }
   });
   return false;//防止dialog 自动关闭
  });

  $apkConfig = $this->_getApkConfig();
  $params = $this->getFilteredParam('get');
  $subFile = $_FILES['apkToolFiles'];
  $apkName = $apkInfoHtml = "";
  if(empty($subFile))
  {
   $this->ajaxReturn(array('status' => -4, 'info' => '请选择要上传的文件'));
  }

  foreach ($subFile['name'] as $subKey => $subVal)
  {
   if ($subFile['name'][$subKey])
   {
    $fileData = $this->_getFileData($subFile, $subKey);
    $checkData = array(
     'maxSize' => $apkConfig['FILE_MAX_SIZE'],
     'savePath' => $apkConfig['TMP_CHILD_PATH'],
     'extArr' => array('apk'),
     'releaseName' => str_replace('.apk', '', $fileData['fileName']), //特有
    );
    $checkResult = $this->_checkFileData($fileData, $checkData);
    if ($checkResult['status'] != 1)
    {
     $this->ajaxReturn($checkResult);
    }
    //移动文件
    $filePath = $checkData['savePath'] . '/' . $fileData['fileName'] . '.tmp' . genRandStr(6);;
    $this->_moveUploadedFile($fileData['tmpName'], $filePath);
    $apkInfo = $this->_apkParser($filePath); //解析
    if($apkInfo['UMENG_CHANNEL'] != 'UMENG_CHANNEL_VALUE')
    {
     @unlink($filePath);        //删除无效文件
     $this->ajaxReturn(array('status' => 0, 'info' => "UMENG_CHANNEL的值要是 UMENG_CHANNEL_VALUE才行"));
    }
    $tmpFileArr['file_info'] = array(
     'name' => $subFile['name'][$subKey],
     'type' => $subFile['type'][$subKey],
     'tmp_name' => str_replace($apkConfig['TMP_CHILD_PATH'] . '/', '', $filePath),
     'error' => $subFile['error'][$subKey],
     'size' => $subFile['size'][$subKey],
    );    //转存该值，不再重复上传文件
   }
   else
   {
    $this->ajaxReturn(array('status' => 0, 'info' => "文件不能为空"));
   }
   foreach ($apkInfo as $key => $val)
   {
    $apkInfoHtml .= "{$key}:{$val} \r\n";
   }
   $apkName = $fileData['fileName'];
   $version = $apkInfo['versionName'];
  }
  $fileInfo = htmlspecialchars(json_encode($tmpFileArr['file_info']));
  $fileInfoHtml = "<input name=\"apkToolFileTmp[]\" value='{$fileInfo}' type=\"hidden\"/>"; //一定要输出前使用htmlspecialchars, 否则不能正确显示页面值和获取至正确的文件信息

  $this->ajaxReturn(array('status' => 1, 'info' => "上传成功", 'version' => $version, 'item' => $item, 'apkName' => $apkName, 'apkInfoHtml' => $apkInfoHtml, 'fileInfo' => $fileInfoHtml));
 }

$('.upload-file-real').attr('disabled', 'disabled');  //提交表单前，禁用上传文件