PHP create file for download without saving on server
Question
Ultimate goal: I want to create a webpage where a user can enter information in forms. With that information I want to create a html file (below called test-download.html) by inserting the information given into a template and then force a download. Since I want to demonstrate this at an upcoming workshop where people will be using this at the "same time" I would like to not save the file on the server and just force the download.
So far: I have this in my html file (test.html):
<form action="test.php" method="post">
To file: <input type="text" name="tofile" />
<input type="submit" />
</form>
and this in my test.php:
<?php
$filename = 'test-download.html';
$htmlcode1 = "<HTML> \n <BODY>";
$htmlcode2 = "</BODY> \n <HTML>";
$somecontent = $htmlcode1.$_POST["tofile"].$htmlcode2;
!$handle = fopen($filename, 'w');
fwrite($handle, $somecontent);
fclose($handle);
header("Cache-Control: public");
header("Content-Description: File Transfer");
header("Content-Length: ". filesize("$filename").";");
header("Content-Disposition: attachment; filename=$filename");
header("Content-Type: application/octet-stream; ");
header("Content-Transfer-Encoding: binary");
readfile($filename);
?>
This overwrites the file test-download.html file and forces a download.
Question: How can I do this without messing with a file (the test-download.html) on the server?
2 answers
solution1
34 ACCPTED 2011-04-06 01:00:55
而不是将其保存到文件，只需在发送标头后echo它。
solution2
19 2011-04-06 01:08:18
Realize that nearly every time a PHP script responds to a request, it's "generating a file" that's downloaded by the browser. Anything you echo , print , printf , or otherwise put out to standard output is the contents of that "file".
All you have to do is tell the browser that the "file" should be handled differently -- and the headers you're outputting should already do that. Once the headers are sent, anything you print out becomes contents of the download.
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