Aras wrote:
> First of all, Happy New Year for everyone in the list. I wish 2007 brings
> all us happiness, health and peace.
>
> I want to read your advises at a point i am stuck within, i have an
> application that serves downloads to clients. For some reason i am limiting
> total open slot for some group of users (not related to my technical
> question).
>
> Example;
>
> // CHECKS SLOT HERE
>
> else { // IF THERE ANY AVAILABLE SLOTS SEND THE FILE
>
> // INCREMENT SLOT NUMBER BY 1
>
> $fp = fopen($pathside,"r");
>
> if ($fp) {
>
> while (!feof($fp)) {
> echo fread($fp, 334);
>
> $bytes_out += 334;
> ob_flush();
>
> if ($bytes_out > $size) {
>
> // DECREASE SLOT NUMBER BY 1, BECAUSE THIS DOWNLOAD IS FINISHED
>
> }
>
> }
>
> }
>
> }
>
>
> Slots are recorded and checked from a simple mysql table. Everything works
> in this scenario. There is no problem if a person starts a download and
> finishes it, his slots get empty upon doing so. Yet if he cancelles the
> transfer, he will never reach my control structure to empty the slot. And
> slots will be full of zombies.
>
> I have thought of updating a mysql field for alive-connections in the while
> loop, but it will definitely add some load on my server. Updating a system
> file is not secure and good way.
>
> What other ways can you recommend to me for the situtation?
Read through this:
http://www.php.net/manual/en/features.connection-handling.php
-Rasmus
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