[Plugin: WP Tuner] wp tuner, die()

I seem to have found a workaround for WP Tuner 0.9.6 on WordPress 3.0.x.

1. Create wp-content/db.php file with this code:

   <?php
   global $wpTunerStart, $wpTunerStartCPU;
   $wpTunerStart = microtime(); // get start time as early as we can
   if ( function_exists( 'getrusage' ) ) { $wpTunerStartCPU = getrusage(); }
   if ( file_exists(dirname(__FILE__).'/plugins/wptuner/wptunertop.php') )
   	@include_once(dirname(__FILE__).'/plugins/wptuner/wptunertop.php'); // fire up WPTuner
   else
   	@include_once(ABSPATH . WPINC . '/wp-db.php');
   ?>

   Note the global variables and slightly different path if copying the code from wp-config.php.

2. Remove the plugin’s code from wp-config.php.
3. Open wptunertop.php and set WPTUNER_NOTCONFIG to false in line 27:

   define('WPTUNER_NOTCONFIG', false);

The purpose of wptunertop.php is to load the plugin as early as possible, before the inclusion of wp-db.php, which is then included by the plugin itself. This approach is not compatible with WordPress 3.0, because wpdb constructor calls is_multisite(), which is not defined yet due to the wrong calling sequence.

Being called from wp-content/db.php, the file is still loaded before database initialization, so the plugin works as intended.

I’ve been using this trick for a couple of months and it still works so far 🙂
The only issue I can think of is when you deactivate and reactivate the plugin, it changes wp-config.php again. In this case you need to repeat step 2. If you describe the exact problem, perhaps a solution can be found.