Index: includes/database.mysql.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/database.mysql.inc,v
retrieving revision 1.66
diff -u -p -r1.66 database.mysql.inc
--- includes/database.mysql.inc	27 Dec 2006 22:50:09 -0000	1.66
+++ includes/database.mysql.inc	21 Jan 2007 23:59:47 -0000
@@ -53,8 +53,15 @@ function db_version() {
  * (e.g. your database and web server live on different machines).
  */
 function db_connect($url) {
+  $url = parse_url($url);
+
   // Check if MySQL support is present in PHP
   if (!function_exists('mysql_connect')) {
+    // Redirect to installer if using default DB credentials
+    if ($url['user'] == 'username' && $url['pass'] == 'password') {
+      include_once 'includes/install.inc';
+      install_goto('install.php');
+    }
     drupal_maintenance_theme();
     drupal_set_title('PHP MySQL support not enabled');
     print theme('maintenance_page', '<p>We were unable to use the MySQL database because the MySQL extension for PHP is not installed. Check your <code>PHP.ini</code> to see how you can enable it.</p>
@@ -62,8 +69,6 @@ function db_connect($url) {
     exit;
   }
 
-  $url = parse_url($url);
-
   // Decode url-encoded information in the db connection string
   $url['user'] = urldecode($url['user']);
   // Test if database url has a password.