From 29de16588458b1abc1b2fb4d125bd9fe04e755c6 Mon Sep 17 00:00:00 2001
From: Andrey Andreev <narf@devilix.net>
Date: Thu, 11 Jun 2015 17:44:20 +0300
Subject: Fix #3904

---
 system/libraries/Form_validation.php | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'system')

diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index 36a8148df..0251286ea 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -618,6 +618,12 @@ class CI_Form_validation {
 					$rules = array(1 => $rule);
 					break;
 				}
+				elseif (is_array($rule) && isset($rule[0], $rule[1]) && is_callable($rule[1]))
+				{
+					$callback = TRUE;
+					$rules = array($rule[0] => $rule[1]);
+					break;
+				}
 			}
 
 			if ( ! $callback)
-- 
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