[wp-hackers] Upgrading a plugin that works on WP 2.9.2 to work with WP 3.0.1+

Brent Shepherd (Prospress) brent at prospress.org
Thu Sep 9 03:33:07 UTC 2010

Check to make sure the plugin has previously been properly deactivated by
looking at the wp_options table. Find the option_name "active_plugins" and
make sure ffxi.php is not in that array when the plugin has been
deactivated. Not properly deactivating is what I've found to cause this for

If that fails, then you can always test if the function is already declared
before declaring it:

if( !function_exists( 'ffxi_install' ) )
function ffxi_install() {

That is really a bandaid more than a solution though.

On Thu, Sep 9, 2010 at 10:24 AM, Dustin Shea <demonicpagan at gmail.com> wrote:

> I've been trying to upgrade a plugin of mine that I wrote so that it works
> with WP 3.0+. The problem I run into is that when I go to activate the
> plugin, it displays the following error
>  Plugin could not be activated because it triggered a *fatal error*
> *Fatal error*: Cannot redeclare ffxi_install() (previously declared in
> */home/demonicpagan/wp-testing/wp-content/plugins/ffxi/ffxi.php:60) in
> /home/demonicpagan/wp-testing/wp-content/plugins/ffxi/ffxi.php* on line
> *353*
> Despite that error being presented, the plugin does activate, however, if I
> can figure out what is triggering the error to display, I'd prefer it.
> The code for this can be found here: http://stelth2000inc.com/ffxi.phps
> I thank anyone who can help me figure out what's going on.
> -Dustin
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