Re: PHP

Jens,

        Granted this works to keep the memory low, the problem isn't really that the php code will segfault, its that the whole apache server will shut down. For example, code like this:

class Bar
{

   function Bar
   {

        $global = new Globals;
   }

   # [ ... ]
};
class Globals
{

   function Globals
   {

        $foo = new Bar;
   }
   # [ ... ]
};

Do you need help?

In addition to our free technical library, Pantek provides professional IT services to companies who utilize Open Source software: Learn more about Pantek's Technical Support offerings Place an order for 24/7/365 Technical Support here Learn more about Pantek, who we are, and what we do Chat with a Live Operator Related securityfocus.com Links bugtraq certification focus-bsd focus-ids focus-ih focus-linux focus-ms focus-sun focus-unix-other focus-virus forensics incidents libnet linux-secnews ms-secnews pen-test secpapers secprog sectools secureshell security-basics securityjobs sf-news vuln-dev webappsec Request more information about Pantek

will cause an infinite loop and that one apache instance will die and stop serving that page. but other php pages elsewhere still work just fine.

With the code that uses more memory than the server permits, instead of just that one page that seems to fail, every instance of httpd will die as well.... sort of.... the processes are still running but no longer respond to signals or connection attempts.

I'm not really worried about _my_ code having issues, that happens sometimes, like having 'for ($i=0;$i>0;$i++)', that just sometimes happens with every developer, a bug... but what I'm getting at is if some user is hosting their website on a production system, that user is granted access to php, that users code sets an extremely large memory limit and writes really bad code that tries to allocate all of that memory, our production server goes bye-bye and our pagers start going nuts.

Thanks,
Ryan Yagatich <support@pantek.com>

        Pantek, Incorporated
 (877) LINUX-FIX - (440) 519-1802

     A long memory is the most
   subversive idea in America.

On Sat, 16 Nov 2002, Jens Rantil wrote:

>Hi Ryan,
>Your problem could be solved by calling mysql_unbuffered_query() instead of mysql_query().
>
>Regards,
>
>Jens
>