pre_update_option_* filter from DD32. fixes #7233

git-svn-id: http://svn.automattic.com/wordpress/trunk@8247 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/functions.php

@@ -490,8 +490,11 @@ function update_option( $option_name, $newvalue ) {
 	$safe_option_name = $wpdb->escape( $option_name );
 	$newvalue = sanitize_option( $option_name, $newvalue );
 
-	// If the new and old values are the same, no need to update.
 	$oldvalue = get_option( $safe_option_name );
+
+	$newvalue = apply_filters( 'pre_update_option_' . $option_name, $newvalue, $oldvalue );
+
+	// If the new and old values are the same, no need to update.
 	if ( $newvalue === $oldvalue )
 		return false;