diff --git a/lib/Cake/Model/Datasource/DboSource.php b/lib/Cake/Model/Datasource/DboSource.php
index cc59edbb3cd..8eab41468f0 100644
--- a/lib/Cake/Model/Datasource/DboSource.php
+++ b/lib/Cake/Model/Datasource/DboSource.php
@@ -913,7 +913,7 @@ public function name($data) {
 				)
 			);
 		}
-		if (preg_match('/^[\w-_\s]*[\w-_]+/', $data)) {
+		if (preg_match('/^[\w\-_\s]*[\w\-_]+/', $data)) {
 			return $this->cacheMethod(__FUNCTION__, $cacheKey, $this->startQuote . $data . $this->endQuote);
 		}
 		return $this->cacheMethod(__FUNCTION__, $cacheKey, $data);
diff --git a/lib/Cake/Network/CakeResponse.php b/lib/Cake/Network/CakeResponse.php
index 21dfd7b2e5b..cae6b34a50d 100644
--- a/lib/Cake/Network/CakeResponse.php
+++ b/lib/Cake/Network/CakeResponse.php
@@ -1164,9 +1164,13 @@ public function checkNotModified(CakeRequest $request) {
 		$modifiedSince = $request->header('If-Modified-Since');
 		if ($responseTag = $this->etag()) {
 			$etagMatches = in_array('*', $etags) || in_array($responseTag, $etags);
+		} else {
+			$etagMatches = false;
 		}
 		if ($modifiedSince) {
 			$timeMatches = strtotime($this->modified()) === strtotime($modifiedSince);
+		} else {
+			$timeMatches = false;
 		}
 		$checks = compact('etagMatches', 'timeMatches');
 		if (empty($checks)) {
diff --git a/lib/Cake/Utility/ObjectCollection.php b/lib/Cake/Utility/ObjectCollection.php
index 460ca86d05c..77e4ad234e4 100644
--- a/lib/Cake/Utility/ObjectCollection.php
+++ b/lib/Cake/Utility/ObjectCollection.php
@@ -95,6 +95,7 @@ public function trigger($callback, $params = array(), $options = array()) {
 		if (empty($this->_enabled)) {
 			return true;
 		}
+		$subject = null;
 		if ($callback instanceof CakeEvent) {
 			$event = $callback;
 			if (is_array($event->data)) {
diff --git a/lib/Cake/View/Helper/FormHelper.php b/lib/Cake/View/Helper/FormHelper.php
index 8a15e1d7a67..141bde6562f 100644
--- a/lib/Cake/View/Helper/FormHelper.php
+++ b/lib/Cake/View/Helper/FormHelper.php
@@ -1060,6 +1060,8 @@ public function input($fieldName, $options = array()) {
 		if ($options['type'] === 'radio' && isset($options['options'])) {
 			$radioOptions = (array)$options['options'];
 			unset($options['options']);
+		} else {
+			$radioOptions = [];
 		}
 
 		$label = $this->_getLabel($fieldName, $options);
@@ -1080,6 +1082,9 @@ public function input($fieldName, $options = array()) {
 			$dateFormat = $this->_extractOption('dateFormat', $options, 'MDY');
 			$timeFormat = $this->_extractOption('timeFormat', $options, 12);
 			unset($options['dateFormat'], $options['timeFormat']);
+		} else {
+			$dateFormat = 'MDY';
+			$timeFormat = 12;
 		}
 
 		$type = $options['type'];