PHP 文件上传后端处理实用技巧方法

2. 很明显，页面里面需要获取文件信息，后台处理代码（PHP）

_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} rn";
}
$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));
}

3. 通过以两部分代码的配合，我们在页面上已经有正确的信息了，只需要在最后提交表单的时候， 不要将文件提交到服务器，在服务器端处理时，只需将之前上传的临时文件移动一下位置即可 ，这样就算大功告成了！