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<title>[19038] trunk/wp-admin/includes/ms.php: Make wpmu_delete_blog() slightly less crappy.</title>
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<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/19038">19038</a></dd>
<dt>Author</dt> <dd>nacin</dd>
<dt>Date</dt> <dd>2011-10-21 22:04:52 +0000 (Fri, 21 Oct 2011)</dd>
</dl>
<h3>Log Message</h3>
<pre>Make wpmu_delete_blog() slightly less crappy. Prevents the entire network from being dropped in a particularly rare edge case. Removes some zombie code. fixes <a href="http://core.trac.wordpress.org/ticket/19009">#19009</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpadminincludesmsphp">trunk/wp-admin/includes/ms.php</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="trunkwpadminincludesmsphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-admin/includes/ms.php (19037 => 19038)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-admin/includes/ms.php        2011-10-21 21:50:36 UTC (rev 19037)
+++ trunk/wp-admin/includes/ms.php        2011-10-21 22:04:52 UTC (rev 19038)
</span><span class="lines">@@ -53,16 +53,17 @@
</span><span class="cx"> * @return void
</span><span class="cx"> */
</span><span class="cx"> function wpmu_delete_blog( $blog_id, $drop = false ) {
</span><del>-        global $wpdb;
</del><ins>+        global $wpdb, $current_site;
</ins><span class="cx">
</span><span class="cx">         $switch = false;
</span><span class="cx">         if ( $blog_id != $wpdb->blogid ) {
</span><span class="cx">                 $switch = true;
</span><span class="cx">                 switch_to_blog( $blog_id );
</span><ins>+                $blog = get_blog_details( $blog_id );
+        } else {
+                $blog = $GLOBALS['current_blog'];
</ins><span class="cx">         }
</span><span class="cx">
</span><del>-        $blog_prefix = $wpdb->get_blog_prefix( $blog_id );
-
</del><span class="cx">         do_action( 'delete_blog', $blog_id, $drop );
</span><span class="cx">
</span><span class="cx">         $users = get_users( array( 'blog_id' => $blog_id, 'fields' => 'ids' ) );
</span><span class="lines">@@ -70,23 +71,24 @@
</span><span class="cx">         // Remove users from this blog.
</span><span class="cx">         if ( ! empty( $users ) ) {
</span><span class="cx">                 foreach ( $users as $user_id ) {
</span><del>-                        remove_user_from_blog( $user_id, $blog_id) ;
</del><ins>+                        remove_user_from_blog( $user_id, $blog_id );
</ins><span class="cx">                 }
</span><span class="cx">         }
</span><span class="cx">
</span><span class="cx">         update_blog_status( $blog_id, 'deleted', 1 );
</span><span class="cx">
</span><ins>+        // Don't destroy the initial, main, or root blog.
+        if ( $drop && ( 1 == $blog_id || is_main_site( $blog_id ) || ( $blog->path == $current_site->path && $blog->domain == $current_site->domain ) ) )
+                $drop = false;
+
</ins><span class="cx">         if ( $drop ) {
</span><del>-                if ( substr( $blog_prefix, -1 ) == '_' )
-                        $blog_prefix = substr( $blog_prefix, 0, -1 ) . '\_';
</del><span class="cx">
</span><del>-                $drop_tables = $wpdb->get_results( "SHOW TABLES LIKE '{$blog_prefix}%'", ARRAY_A );
-                $drop_tables = apply_filters( 'wpmu_drop_tables', $drop_tables );
</del><ins>+                $drop_tables = apply_filters( 'wpmu_drop_tables', $wpdb->tables( 'blog' ) );
</ins><span class="cx">
</span><del>-                reset( $drop_tables );
-                foreach ( (array) $drop_tables as $drop_table) {
-                        $wpdb->query( "DROP TABLE IF EXISTS ". current( $drop_table ) ."" );
</del><ins>+                foreach ( (array) $drop_tables as $table ) {
+                        $wpdb->query( "DROP TABLE IF EXISTS `$table`" );
</ins><span class="cx">                 }
</span><ins>+
</ins><span class="cx">                 $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->blogs WHERE blog_id = %d", $blog_id ) );
</span><span class="cx">                 $dir = apply_filters( 'wpmu_delete_blog_upload_dir', WP_CONTENT_DIR . "/blogs.dir/{$blog_id}/files/", $blog_id );
</span><span class="cx">                 $dir = rtrim( $dir, DIRECTORY_SEPARATOR );
</span><span class="lines">@@ -120,17 +122,7 @@
</span><span class="cx">                 }
</span><span class="cx">         }
</span><span class="cx">
</span><del>-        $wpdb->query( "DELETE FROM {$wpdb->usermeta} WHERE meta_key = '{$blog_prefix}autosave_draft_ids'" );
-        $blogs = get_site_option( 'blog_list' );
-        if ( is_array( $blogs ) ) {
-                foreach ( $blogs as $n => $blog ) {
-                        if ( $blog['blog_id'] == $blog_id )
-                                unset( $blogs[$n] );
-                }
-                update_site_option( 'blog_list', $blogs );
-        }
-
-        if ( $switch === true )
</del><ins>+        if ( $switch )
</ins><span class="cx">                 restore_current_blog();
</span><span class="cx"> }
</span><span class="cx">
</span></span></pre>
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