diff --git a/src/Symfony/Component/PropertyInfo/Extractor/PhpDocExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/PhpDocExtractor.php
index 6be39d29d2..717baddab2 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/PhpDocExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/PhpDocExtractor.php
@@ -111,7 +111,7 @@ class PhpDocExtractor implements PropertyDescriptionExtractorInterface, Property
             $nullable = false !== $nullKey;
 
             // Remove the null type from the type if other types are defined
-            if ($nullable && count($varTypes) > 1) {
+            if ($nullable && \count($varTypes) > 1) {
                 unset($varTypes[$nullKey]);
             }
 
@@ -127,7 +127,7 @@ class PhpDocExtractor implements PropertyDescriptionExtractorInterface, Property
             return;
         }
 
-        if (!in_array($prefix, ReflectionExtractor::$arrayMutatorPrefixes)) {
+        if (!\in_array($prefix, ReflectionExtractor::$arrayMutatorPrefixes)) {
             return $types;
         }
 
@@ -386,7 +386,7 @@ class PhpDocExtractor implements PropertyDescriptionExtractorInterface, Property
      */
     private function getPhpTypeAndClass($docType)
     {
-        if (in_array($docType, Type::$builtinTypes)) {
+        if (\in_array($docType, Type::$builtinTypes)) {
             return array($docType, null);
         }
 
diff --git a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
index 3ec1d8d6ea..fcd443de9b 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
@@ -161,7 +161,7 @@ class ReflectionExtractor implements PropertyListExtractorInterface, PropertyTyp
             return;
         }
 
-        if (in_array($prefix, self::$arrayMutatorPrefixes)) {
+        if (\in_array($prefix, self::$arrayMutatorPrefixes)) {
             $type = new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), $type);
         }
 
@@ -187,7 +187,7 @@ class ReflectionExtractor implements PropertyListExtractorInterface, PropertyTyp
             return array($this->extractFromReflectionType($reflectionType));
         }
 
-        if (in_array($prefix, array('is', 'can'))) {
+        if (\in_array($prefix, array('is', 'can'))) {
             return array(new Type(Type::BUILTIN_TYPE_BOOL));
         }
     }
diff --git a/src/Symfony/Component/PropertyInfo/PropertyDescriptionExtractorInterface.php b/src/Symfony/Component/PropertyInfo/PropertyDescriptionExtractorInterface.php
index a2e98d0feb..3f400a8fa5 100644
--- a/src/Symfony/Component/PropertyInfo/PropertyDescriptionExtractorInterface.php
+++ b/src/Symfony/Component/PropertyInfo/PropertyDescriptionExtractorInterface.php
@@ -12,7 +12,7 @@
 namespace Symfony\Component\PropertyInfo;
 
 /**
- * Description extractor Interface.
+ * Guesses the property's human readable description.
  *
  * @author Kévin Dunglas <dunglas@gmail.com>
  */
diff --git a/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php b/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php
index 031c8ac05e..1361a94378 100644
--- a/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php
@@ -112,7 +112,7 @@ class PropertyInfoExtractor implements PropertyInfoExtractorInterface
     private function extract(array $extractors, $method, array $arguments)
     {
         foreach ($extractors as $extractor) {
-            $value = call_user_func_array(array($extractor, $method), $arguments);
+            $value = \call_user_func_array(array($extractor, $method), $arguments);
             if (null !== $value) {
                 return $value;
             }