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php下载excel无法打开的解决方法_php实例

WBOY
WBOYOriginal
2016-06-07 17:22:44733browse

php下载excel文件,
1、在下载的过程中不要 输出任何非文件信息,比如 echo log信息。 否则下载后的文件无法打开,提示格式错误或者文件被破坏。
2、 输出的excel格式一定要和后缀名保存一直,否也会提示格式错误或者文件被破坏

复制代码 代码如下:

if (file_exists(CACHE_PATH . $file_name)){
            //$this->logger->error('file realpath:'.realpath(CACHE_PATH . $file_name));
      header( 'Pragma: public' );
      header( 'Expires: 0' );
      header( 'Content-Encoding: none' );
      header( 'Cache-Control: must-revalidate, post-check=0, pre-check=0' );
      header( 'Cache-Control: public' );
   header( 'Content-Type: application/vnd.ms-excel'); 
      header( 'Content-Description: File Transfer' );
      header( 'Content-Disposition: attachment; filename=' . $file_name );
      header( 'Content-Transfer-Encoding: binary' );
      header( 'Content-Length: ' . filesize ( CACHE_PATH . $file_name ) );
      readfile ( CACHE_PATH . $file_name );
  } else {
   $this->logger->error('export model :'.$id.' 错误:未生产文件');
      echo '<script>alert(\'export error, file not exists!\')</script>';
  }
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