5 files changed, 10 insertions, 12 deletions
diff --git a/system/libraries/Cache/drivers/Cache_redis.php b/system/libraries/Cache/drivers/Cache_redis.php
index d97643632..b940b76cb 100644
--- a/system/libraries/Cache/drivers/Cache_redis.php
+++ b/system/libraries/Cache/drivers/Cache_redis.php
@@ -223,7 +223,7 @@ class CI_Cache_redis extends CI_Driver
 	{
 		$value = $this->get($key);
 
-		if ($value)
+		if ($value !== FALSE)
 		{
 			return array(
 				'expire' => time() + $this->_redis->ttl($key),
@@ -270,7 +270,7 @@ class CI_Cache_redis extends CI_Driver
 
 		if ($CI->config->load('redis', TRUE, TRUE))
 		{
-			$config += $CI->config->item('redis');
+			$config = $CI->config->item('redis');
 		}
 
 		$config = array_merge(self::$_default_config, $config);
diff --git a/system/libraries/Encryption.php b/system/libraries/Encryption.php
index e3e68139a..f3e039881 100644
--- a/system/libraries/Encryption.php
+++ b/system/libraries/Encryption.php
@@ -121,7 +121,7 @@ class CI_Encryption {
 	);
 
 	/**
-	 * List of supported HMAC algorightms
+	 * List of supported HMAC algorithms
 	 *
 	 * name => digest size pairs
 	 *
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index 05de59628..522eba704 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -198,22 +198,20 @@ class CI_Form_validation {
 			return $this;
 		}
 
-		// No fields? Nothing to do...
-		if ( ! is_string($field) OR $field === '')
+		// No fields or no rules? Nothing to do...
+		if ( ! is_string($field) OR $field === '' OR empty($rules))
 		{
 			return $this;
 		}
 		elseif ( ! is_array($rules))
 		{
 			// BC: Convert pipe-separated rules string to an array
-			if (is_string($rules))
-			{
-				$rules = explode('|', $rules);
-			}
-			else
+			if ( ! is_string($rules))
 			{
 				return $this;
 			}
+
+			$rules = explode('|', $rules);
 		}
 
 		// If the field label wasn't passed we use the field name
diff --git a/system/libraries/Session/Session.php b/system/libraries/Session/Session.php
index bb457c659..0549fef66 100644
--- a/system/libraries/Session/Session.php
+++ b/system/libraries/Session/Session.php
@@ -869,7 +869,7 @@ class CI_Session {
 	public function set_tempdata($data, $value = NULL, $ttl = 300)
 	{
 		$this->set_userdata($data, $value);
-		$this->mark_as_temp($data, $ttl);
+		$this->mark_as_temp(is_array($data) ? array_keys($data) : $data, $ttl);
 	}
 
 	// ------------------------------------------------------------------------
diff --git a/system/libraries/Zip.php b/system/libraries/Zip.php
index f2f17148b..3e98ac568 100644
--- a/system/libraries/Zip.php
+++ b/system/libraries/Zip.php
@@ -352,7 +352,7 @@ class CI_Zip {
 		// Set the original directory root for child dir's to use as relative
 		if ($root_path === NULL)
 		{
-			$root_path = dirname($path).DIRECTORY_SEPARATOR;
+			$root_path = str_replace(array('\\', '/'), DIRECTORY_SEPARATOR, dirname($path)).DIRECTORY_SEPARATOR;
 		}
 
 		while (FALSE !== ($file = readdir($fp)))