Theme development

In Protecting content from non-logged in users when using phptemplate overrides there is talk about how to customize the template.php so that anonymous users cannot see private information on the site, since overiding via phptemplate goes around permissions.

I'd like to extend this to allow more customization in two ways

1. display different page layouts for anonymous and logged in users (eg- display left and right columns only for logged in users).
2. create different page layouts depending on what is on the page (eg- blog)

To approach task #1 i've tried this in my template.php:

/**
* check if the user is logged in before invoking the template override
*/
global $user;
if($user->uid) { // check to see if the user is logged in
	function phptemplate_page($content, $title = NULL, $breadcrumb = NULL) {
  	return _phptemplate_callback('page', $vars);
	}
}

elseif (!  $user->uid) {
	function phptemplate_page($content, $title = NULL, $breadcrumb = NULL) {
 	 return _phptemplate_callback('page_anon', $vars);
	}
}

This, in theory, would call page_anon.tpl.php for anonymous users and page.tpl.php for registered users. But I get this error:

Fatal error: Cannot redeclare phptemplate_page() (previously declared in *edit*/themes/engines/phptemplate/phptemplate.engine:143) in *edit*/themes/my_theme/template.php on line 15

The line # is actually corresponding to the first mention of phptemplate_page, i've edited out the parts that you can see by following the link above.

So am I to assume that it's not possible to customize the call to page.tpl.php? Or am I missing something else?

I think the problem will also help solve task #2.

I apologize for the double post. I shoudl have posted this problem in this forum, but it appears to be too late.

I am having a problem with template.php and theming modules. PLease read about my problem here:

http://drupal.org/node/18276

Can anyone help?

Thanks in advance!

Mateo

How would you go about adapting xtemplate.engine to display a Taxonomy Image? I changed the title section of the header as follows:

if ($title = drupal_get_title()) {
$xtemplate->template->assign("title", $title);
$xtemplate->template->assign("breadcrumb", theme("breadcrumb", drupal_get_breadcrumb()));
$xtemplate->template->assign("taximg",taxonomy_image_display($term->tid));
$xtemplate->template->parse("header.title");
}

What did I do wrong?

The global checkboxes that are intended to control the display of Post Information (i.e.: Username, Timestamp, etc.) do not seem to function with phptemplate themes such as Manji or Obsidian, though they do with Xtemplate-based themes. Has anyone else experienced this problem and found a solution?

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