You could check the byte count in the web server log to see if the
whole file was transferred.
In PHP, you could also do this by checking connection_abor ted() after
sending the file. For example:
ignore_user_abo rt(true); // Don't end if the connection breaks
if (readfile($path ) !== false && !connection_abo rted()) {
// Success!
}
Here's a larger example. The function sendFile returns the status of
the download:
<?
// Sample usage
function sendTest()
{
$res = sendFile('appli cation.exe', 'application/octet-stream');
if ($res['status']) {
// Download succeeded
} else {
// Download failed
}
@saveDownloadSt atus($res);
}
// The sendFile function streams the file and checks if the
// connection was aborted.
function sendFile($path, $contentType = 'application/octet-stream')
{
ignore_user_abo rt(true);
header('Content-Transfer-Encoding: binary');
header('Content-Disposition: attachment; filename="' .
basename($path) . "\";");
header("Content-Type: $contentType");
$res = array(
'status' =false,
'errors' =array(),
'readfileStatus ' =null,
'aborted' =false
);
$res['readfileStatus '] = readfile($path) ;
if ($res['readfileStatus '] === false) {
$res['errors'][] = 'readfile failed.';
$res['status'] = false;
}
if (connection_abo rted()) {
$res['errors'][] = 'Connection aborted.';
$res['aborted'] = true;
$res['status'] = false;
}
return $res;
}
// Save the status of the download to some place
function saveDownloadSta tus($res)
{
$ok = false;
$fh = fopen('download-status-' . $_SERVER['REMOTE_ADDR'] . '-' .
date('Ymd_His') , 'w');
if ($fh) {
$ok = true;
if (!fwrite($fh, var_export($res , true))) {
$ok = false;
}
if (!fclose($fh)) {
$ok = false;
}
}
return $ok;
}
Dan D wrote:
I have a large install file (an exe) on my web server that people
download and install from. Looking at my log files, I see a lot of
people downloading it, but no way to tell for sure if they completed the
download or cancelled out before it completed. Is there any function in
PHP that would allow the web server to send the file and detect a
completion or cancellation? Or perpahs a javascript/PHP method?
Any help would be greatly appreciated.
Thanks,
Dan
