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Posted by John C. Frickson on 03/09/07 18:30
On 2007-03-09 10:28, John C. Frickson wrote:
> My company produces reports for our customers in PDF format. I have a
> php script that verifies login status and access rights, and sends
> the pdf to the client using readfile().
>
> This has worked fine until recently. One of our customers' reports
> is 10.6MB, and the customer never receives it and I can't get it
> either. I checked the Apache access_log, and it shows varying
> amounts of bytes being sent, but always close to 10MB.
>
> I tried changing the php script to do fopen(), fread(), echo,
> ob_flush() and flush(). After each flush, I write a message to a log
> file. The messages in the log file stop at 10MB, as if the php script
> is hung.
>
> Using a network monitor, I see the connection being established, the
> HTTP GET being sent, but no content coming back.
>
> PHP version is 5.1.2
> Apache is 2.2.3
> OS is SuSE Linux Enterprise Server 10.0 - 64bit
>
> Current test version looks like this:
>
> ini_set("output_buffering", "0");
> ini_set("implicit_flush", "1");
> ini_set("memory_limit", "100M");
> ini_set("max_execution_time", "600");
> $lth = 0;
> $in = fopen($path, "r");
> while (!feof($in)) {
> $data = fread($in, 8192);
> $lth += strlen($data);
> $errLog->WriteLog("Read $lth bytes" , "debug.txt");
> echo $data;
> $errLog->WriteLog("After echo" , "debug.txt");
> ob_flush();
> $errLog->WriteLog("After ob_flush" , "debug.txt");
> flush();
> $errLog->WriteLog("After flush" , "debug.txt");
> }
> $errLog->WriteLog("Got EOF", "debug.txt");
> fclose($in);
> $errLog->WriteLog("End of Script - read $lth bytes", "debug.txt");
>
>
> The last five lines of the debug.txt log file say:
>
> Read 10223616 bytes
> After echo
> After ob_flush
> After flush
> Read 10231808 bytes
> After echo
>
> So it's never returning from the ob_flush() call. Time from first
> log entry to last is about 1 second.
>
> Any ideas?
> John
I noticed I didn't have a "Content-Length" header, so I added it
and it's now working. Even without the header, it should have
worked anyway, shouldn't it?
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