duanchu3376 2014-02-19 23:26
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创建文件并下载它的PHP

I'm trying to generate a .html file and download it.

My issue: First i check if file exists, if true i delete it and create a new one.

When i click to generate file, the downloaded file is always the first file created and isnt updated. I've checked the file manualy and its ok but the downloaded is the old one. If i delete the file on server i can download anyway.

check the site: bit.ly/1crrcif

$content =  "<html></head></head><body>All content here</body></html>";

   if( empty( $error )){ 

   echo "<h3>File generated</h3>";
   $my_file = 'change_nameto_index.html';
   if (file_exists($my_file)) {
       echo "file exists";
      unlink($my_file);
   }

   $new_file = 'change_nameto_index.html';
   $handle = fopen($new_file, 'w') or die('Cannot open file:  '.$new_file);
   $data = $content;
   fwrite($handle, $data);
   fclose($handle);
   echo "<a download='change_nameto_index.html' href='change_nameto_index.html'>"
      . "<b class='download'>Download</b></a>"
      ;
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2条回答 默认 最新

  • douhuan1380 2014-02-19 23:30
    关注

    solution 1: try to add this to your download page head:

    <meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate" />
<meta http-equiv="Pragma" content="no-cache" />
<meta http-equiv="Expires" content="0" />

    Solution 2:

    i think it's a 'cache problem'. try this:

    echo "<a download='index.html?".time()."' href='index.html?".time()."'><b class='download'>Download</b></a>";

    this isn't the best way but probably the fast (and easy) one

    adding a parameter that is every time different (with '?' and time()) will make the browser thinking that the download page is also different, so it will download it's latest version

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
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