RE: [users@httpd] Memory consumption

["Gary W. Smith" <gary@xxxxxxxxxxxxxxx>]

The following might help.  BTW, what is the memory limit in your php.ini file?  You might want to ensure that is a manageable number and then implement the code sample.

 

http://us3.php.net/manual/en/function.fread.php

 

 

For download the big files (more than 8MB), you must used ob_flush() because the function flush empty the Apache memory and not PHP memory.
And the max size of PHP memory is 8MB, but ob_flush is able to empty the PHP memory.

header('Content-Type: application/force-download');
header ("Content-Length: " . filesize($file));
header ("Content-Disposition: attachment; filename=$theFileName");

   $fd = fopen($file, "r");
   while(!feof($fd))
  {
       echo fread($fd, 4096);
       ob_flush();
      
   }

 

 

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From: Kamil Srot [mailto:kamil.srot@xxxxxxxxx]
Sent: Tuesday, August 02, 2005 6:01 PM
To: users@xxxxxxxxxxxxxxxx
Subject: Re: [users@httpd] Memory consumption

 

Hi Gary,

Gary W. Smith wrote:

How are you reading the file in order to output it?  Some of the PHP

commands do indeed read the entire file before processing.  This would

cause the entire file to sit in ram.  I believe there are some binary

functions that only read segments at a time.  I think that is where you

problem lies.

I don't thing it's the case... I tried everything I was aware of - general fread, fpassthru etc.. all gives the same results...

Can you post (or send me) the relevant code segments that you use to

read the file and flush it to the client?

Currently its general fread/echo with no flush - as the flush seems even to make the situation worser...

I can provide packet for reproduction if you are going to investigate...

Thank you,
--
Kamil