note 56946 added to function.fpassthru
| From: | php-general at lists dot php dot net | Date: | Tue, 20 Sep 2005 04:12:43 +0000 |
| Subject: | note 56946 added to function.fpassthru | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-95445@lists.php.net to get a copy of this message | ||
I've gathered some useful info regarding sessions and large file downloads. I do not take
credit for the function, just putting it in one spot for people.
The function:
<?
function send_file($name) {
ob_end_clean();
$path = "/directory/path/".$name;
if (!is_file($path) or connection_status()!=0) return(FALSE);
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
header("Expires: ".gmdate("D, d M Y H:i:s", mktime(date("H")+2,
date("i"), date("s"), date("m"), date("d"),
date("Y")))." GMT");
header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
header("Content-Type: application/octet-stream");
header("Content-Length: ".(string)(filesize($path)));
header("Content-Disposition: inline; filename=$name");
header("Content-Transfer-Encoding: binary\n");
if ($file = fopen($path, 'rb')) {
while(!feof($file) and (connection_status()==0)) {
print(fread($file, 1024*8));
flush();
}
fclose($file);
}
return((connection_status()==0) and !connection_aborted());
}
?>
And now how to use it...
<?php
session_start();
//Validate the user
if($_SESSION[login] == 1){
//Close the session to allow for header() to be sent
session_write_close();
if(!send_file("testfile.zip")) {
die ("file transfer failed");
} else {
//Log the download
}
}else{
echo "Not logged in";
}
?>
This lets a user download a file while still being able to browse your site.
----
Manual Page -- http://www.php.net/manual/en/function.fpassthru.php
Edit -- http://master.php.net/manage/user-notes.php?action=edit+56946
Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+56946&report=yes&reason=added+to+the+manual
Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+56946&report=yes&reason=bad+code
Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+56946&report=yes&reason=spam
Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+56946&report=yes&reason=useless
Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+56946&report=yes&reason=non-english
Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+56946&report=yes&reason=already+in+docs
Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+56946&report=yes
Reject -- http://master.php.net/manage/user-notes.php?action=reject+56946&report=yes
Search -- http://master.php.net/manage/user-notes.php