[wp-testers] Conditional tags not working

[Austin Matzko]

On Sat, Jan 16, 2010 at 11:48 PM, Nathan Rice <ncrice at gmail.com> wrote:
> OK, something simple and straightforward ...
>
> Let's say I want to create an admin settings page. I have the code loaded in
> a separate file, and want to use the functions.php file to include it, but
> there's no need to load the code into memory when viewing the front-end
> (non-admin). So, I wrap the include in conditional tags ...
>
> <?php
> if(!is_admin())
> require_once(TEMPLATEPATH.'/admin_menu.php');
> ?>

You do mean "is_admin()", not "! is_admin()", right?

> That code does NOT work.

It should, assuming you remove the "!".

> Or, let's say I want to move the comment reply script call from the
> header.php to the functions.php, where it really belongs ...
>
> <?php
> if(is_singular())
> wp_enqueue_script( 'comment-reply' );
> ?>
>
> See? And please don't tell me to write a custom function and use hooks.
> That's not the issue here. The issue is the fact that conditionals aren't
> working properly. I'm almost positive that this used to work, which is why
> I'm wondering why it's not working now.

Unfortunately, attaching callback functions to the correct hooks is
the issue here.   It doesn't make any sense to check is_singular() at
the top of functions.php, because when functions.php is included and
that code executed, WordPress doesn't yet know what the queried page
is--whether it's singular, a page, or whatever.

I would be really surprised if the above example has worked in any
version of WordPress.  It's impossible for WordPress to determine
whether the current query is for a singular object, before it has even
parsed the query.