Re: [Phplib-users] Odd PHPlib WebApp Problem

[Andrew C. <ph...@ev...>]

Ah!  That makes sense.  It sounds like a much better approach to using 
nested templates.  I was really disappointed when this popped up.  I have 
been striving to keep my code, content (in a database), and formatting (in 
templates and CSS) completely separate.

I'm not sure if this will have any impact on the immediate problem but, it 
does address a larger concern.

Thank you,

Andrew Crawford

At 12:56 AM 5/8/2004 -0500, Layne Weathers wrote:
>Quoth Andrew Crawford:
>
> > The table is complicated enough that the users need the column headers
> > reproduced every 5 or 10 records to make it usable.  Originally, I was
> > generating this view entirely using nested templates.  The view took way
> > too long to load - over 80 seconds - and monopolized the server's CPU for
> > the entire time.  Several users even had timeout problems waiting for the
> > page to load.  Benchmarking revealed almost all of that time was spent in
> > the section that output the column headers every few records.
>
>
>Whenever I use nested templates, I hand the nested part off to a clean
>template object, build the full list, and hand the parsed content back to
>the primary template object. I often do this several times in one page.
>
>The problem is that when you use your global template object, the regular
>expression tries to replace all known variables on each parse(). The fewer
>variables used in your nested block, the greater the speed gain of this
>method.
>
>It might be worth a try.
>
>
>I've added a shortcut function to my Template extension class that I call
>before each nested block to start with a clean loop template object:
>     function unset_vars()
>         {
>         $this->varkeys = $this->varvals = array();
>         }
>
>Here is a simple sample building the options in a select:
>
>     $loop_tpl->unset_vars();
>     $loop_tpl->set_var("option", "\n            <option
>value=\"{value}\"{selected}>{text}</option>");
>
>     foreach($options as $text => $value)
>         {
>         $loop_tpl->set_var(array(
>             "value" => $value,
>             "text" => $text,
>             "selected" => ((is_array($some_var) and ($value == $some_var)) ?
>" selected" : "")));
>         $loop_tpl->parse("options", "option", true);
>         }
>     $tpl->set_var("options", $loop_tpl->get_var("options"));
>
>Layne Weathers