This is useful as it prevents whitespace after the closing ?> from being accidentally added to the output. I always check PHP files for whitespace manually, but this technique solves that problem automatically. Great!

This test fails because the new server runs with STRICT_TRANS_TABLES mode. It means that a inserted value must be equal to the stored value or the statement fails. Without the mode setting the inserted value is truncated to the column’s maximum length.

       MainParagraph.
           perform InitProgram
           perform ProcessScreen
             until EndOfProgram
           perform ExitProgram

           goback
           .

       InitProgram.
           set ContinueProgram             to true
           .

       ExitProgram.
           continue
           .

       ProcessScreen.
           perform ShowScreen

           evaluate true
             when EnterKey
               perform CheckInput

             when CF03
               set EndOfProgram            to true
               set linkF03Used             to true

             when CF08
               perform CheckInput

               if NoErrors
                  perform WriteData
               end-if

               if NoErrors
                  set EndOfProgram         to true
               end-if

             when CF12
                set EndOfProgram           to true
                set linkF12Used            to true
           end-evaluate
           .

Installation

1. Download the plugin zip file and unzip the file in a temporary directory.
2. Put the kwebble_archives_by_cat.php file in your WordPress plugin directory:
   <your wordpress dir>/wp-content/plugins
3. Activate the plugin ‘Archives for a category’ on the Plugin Management page of the WordPress administration panel.
4. Optionally disable the canonical URLs from the menu Options | Kwebble.
   A WordPress feature added in version 2.3, called canonical URLs, redirects browsers on certain URLs. This also happens with the URLs for the archives with a cat parameter. This causes the archive pages to contain posts which do not belong to the selected period.

   To solve this problem the plugin can disable canonical URLs. This uses the technique used in the Disable Canonical URL Redirection plugin Mark Jaquith made. So if you are already using that plugin you don’t need to change the setting for this plugin.
   To disable canonical URLs go to the administration section of your blog, choose the Options tab and then the Kwebble subtab. On that page you will find a checkbox to disable canonical URLs.

Usage

After installing and activating the plugin the wp_get_archives() function accepts a ‘cat’ parameter. Its value must be one or more category ID’s, separated by comma’s, of the categories to include in building the list of archives.

For example, to show the default monthly list of archives for category 1 put this in a template:

<?php wp_get_archives('cat=1'); ?>

The same list, but with posts from categories 1 and 3:

<?php wp_get_archives('cat=1,3'); ?>

To create a list of archives for category 1 as a dropdown box use:

<?php wp_get_archives('format=option&cat=1'); ?>

For a complete description of all parameters see the documentation of wp_get_archives().

The last thing is to make sure the template used to show each archive displays posts from the selected category. I’m using category specific templates on this site, like category-id.php where id is the ID of the category to display.
You can use other templates in the template hierarchy, but make sure the template shows items of that category.

Limitations

This plugin does not work for weekly archives. The list with archive links is correct, but the links themselves do not include the category. So when used, WordPress will not filter the resulting page on the category. The technical reason is that WordPress does not apply filters when the links for weekly archives are generated, so the plugin can’t change them. Perhaps in a next version of WordPress…

This plug-in was developed and tested to work correctly with WordPress versions 2.2.1 and 2.3.1. It probably also works with 2.3.2.

Older versions

Version 1.2

23-11-2007 - Added support for WordPress 2.3.1. Download.

Version 1.0

15-08-2007 - Initial version, works with WordPress 2.2.1. Download.

Copyright

Copyright 2007, 2008 Rob Schlüter. All rights reserved.

Licensing terms

• You may use, change and redistribute this software provided the copyright notice above is included.
• This software is provided without warranty, you use it at your own risk.

So I made a litte Greasemonkey script that move the text to the right. And at the same time it removes the upper limit of the page width, so there’s less space wasted on the sides of the pages.

Installation

1. This script requires Greasemonkey, so if you don’t have that installed do that first.
2. Install Digg enhancer.

The next two articles will flesh out the rest of the API, improve the UI for our application, and then play around with XML serialization and other goodness to make BackPack portable.

To use it, start with adding the following function to the Geo plugin. I’m using version 1.0, don’t know if it works in earlier versions:

function get_the_rss_geotags()
/**
* Returns the tags with geo information for inclusion in RSS 2.0 feeds.
*
* Include a call to this function inside the <item> tag to
* add tags with geo information if available.
* To keep the feed valid add these namespace declarations to the <rss> tag:
*    xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#"
*    xmlns:icbm="http://postneo.com/icbm"
*    xmlns:geourl="http://geourl.org/rss/module/"
*/
{
	global $wp_query;

	if(!get_settings('use_geo_positions')) return;

	list($lat, $lon) = split(',', get_post_meta($wp_query->post->ID, '_geo_location', true));
	if ($lat == '' || $lon == '') {
		if (get_settings('use_default_geourl')){
			// send the default here
			$lat = get_settings('default_geourl_lat');
			$lon = get_settings('default_geourl_lon');
		}
	}
	if ($lat != '' && $lon != '') {
		echo "<geo :lat>$lat</geo><geo :long>$lon</geo>\n"
				. "<icbm :latitude>$lat</icbm><icbm :longitude>$lon</icbm>\n"
				. "<geourl :longitude>$lon</geourl><geourl :latitude>$lat</geourl>\n";
	}
}

Now you can add this line to wp-rss2.php, somewhere inside the <item> tag:

<?php echo get_the_rss_geotags(); ?>

Also remember to add these namespace declarations to the rss tag:

<rss version=”2.0”
	xmlns:geo=”http://www.w3.org/2003/01/geo/wgs84_pos#”
	xmlns:icbm=”http://postneo.com/icbm”
	xmlns:geourl=”http://geourl.org/rss/module/”>

That’s it.