** 更新 - 我知道它应该可以工作。我将 iframe 代码修复为仅回显参数而不是整行。不知何故,这解决了它。现在我可以异步下载一个文件并在当前的php中继续处理**
我正在尝试处理标题和 readfile()。调用 readfile() 后似乎没有执行任何代码。我推测是因为“一个 HTTP 请求,一个文件”规则。
我读到了使用 iframe 来绕过这个限制的建议。我尝试将此函数放在一个单独的文件中(例如 writezip)并从另一个文件中调用它,例如:
<!-- this code works and allows for an invisible file transfer-->
<iframe src="<? echo 'writezip.php' ?>" height="0px" width="0px" frameBorder="0" id="getfileurl"> </iframe>
<!-- this code does not and will not run the iframe asynchronously -->
<!-- Remove this line for a working solution -->
<? echo '<iframe src="Untitled-1.php">' ?>
<? echo "File was sent to you"; ?>
但这似乎不起作用(我在它自己的文件中删除了函数声明 - 所以它会在文件加载时执行)。有什么建议么?您将如何显示“文件已发送”的消息 - 提前致谢
<?php
function writezip(){
$fullfilename = "post.zip";
$outfilename = "test.zip";
$mode = "download";
if (file_exists($fullfilename)){
// Parse Info / Get Extension
$fsize = filesize($fullfilename);
$path_parts = pathinfo($fullfilename);
$ext = strtolower($path_parts["extension"]);
// Determine Content Type
switch ($ext) {
case "pdf": $ctype="application/pdf"; break;
case "exe": $ctype="application/octet-stream"; break;
case "zip": $ctype="application/zip"; break;
case "doc": $ctype="application/msword"; break;
case "xls": $ctype="application/vnd.ms-excel"; break;
case "ppt": $ctype="application/vnd.ms-powerpoint"; break;
case "gif": $ctype="image/gif"; break;
case "png": $ctype="image/png"; break;
case "jpeg":
case "jpg": $ctype="image/jpg"; break;
default: $ctype="application/force-download";
}
header("Pragma: public"); // required
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false); // required for certain browsers
header("Content-Type: $ctype");
$outfilename = ($outfilename=="" ? basename($fullfilename) : $outfilename);
if ($mode == "view"){
// View file
header('Content-Disposition: inline; filename='.$outfilename);
}
else {
// Download file
header('Content-Disposition: attachment; filename='.basename($outfilename));
}
header("Content-Transfer-Encoding: binary");
header("Content-Length: ".$fsize);
if (ob_get_length() > 0 ) {
ob_clean();
flush();
}
readfile( $fullfilename );
die("anything here");
}
else
{
echo "File not found: ". $fullfilename;
}
}
?>