Note: The ExecPHP widget does not work in the upcoming WordPress 2.5. Therefore, if you upgrade to 2.5, you will need to install the updated version of this widget. It can be found here, now and forever more: http://wordpress.org/extend/plugins/php-code-widget/
A new plugin for Wordpress came out that’s kinda cool. It’s called Widgets, and the general idea of it is to make the sidebars on your blog a bit more configurable, a bit more easily.
So, I decided to spend an hour or so converting my sidebars to Widgets so I could manage them a bit simpler. Editing PHP code is easy but time consuming, while dragging stuff and dropping it to rearrange the blog, well, that’s quick and easy.
Few things I learned:
- The Widgets Plugin does not like Windows. Since I run this site on a Windows box (edit: I did then, I don’t anymore, and anyway, they have fixed this problem since then), it needed some tweaking to make it work. For those who want to know, the problem is in the sidebar_admin_setup() function in widgets.php. More info on this problem is in the comments of this post.
- Text boxes are extremely useful when converting from your existing customized webpage to a widgets based one, as you can simply cut and paste chunks of HTML into them and voila, you’ve got a sidebar widget. However, there’s not a lot of text widgets available. If you need more text widgets, you will need to edit these functions: widget_text_setup(), widget_text_page(), and widget_text_register(). As it turned out, I didn’t need but 4 text widgets because:
- Despite how useful text boxes were for a quick migration, they were not enough.
So, I ended up writing two plugins of my own.
The first one is a Google AdSense plugin. You can download it here: gadsense.zip. It’s exactly the same as the Text widgets, but with (very) minor tweaks specifically for inserting Google Ads in the sidebars. Also, it shows a name of “Google AdSense” in the widgets panel, which is nice. Like the Text widget, you can have more than 1 of them, but unlike the Text widget, you can only have 4 of them, since Google’s TOS only allows 3 ads and 1 link block on a page.
The next one is also like the Text plugin, however it will also let you put PHP code into the text and have it actually work. Here’s the download: execphp.zip. Like the Text plugin, you can have up to 9 of them (more if you want to tweak the code). Note that any PHP code you put into the widget MUST be surrounded by <?php and ?> tags, just like writing PHP normally. Also note that this is isn’t exactly safe, as it’s just doing an eval() on whatever you put in there, so you have complete and full access, as does anybody else who can get to your admin screen. Still, it’s very useful.
Both of those are plugins. Just drop them in the widgets folder under the plugins folder, and activate them on the plugins screen. Then the widgets will be available for you to use on the widgets screen.
Hope these help somebody. They sure helped me. 
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