minor #27003 [PropertyInfo] Minor cleanup and perf improvement (dunglas)

This PR was squashed before being merged into the 2.8 branch (closes #27003).

Discussion
----------

[PropertyInfo] Minor cleanup and perf improvement

| Q             | A
| ------------- | ---
| Branch?       | 2.8
| Bug fix?      | no
| New feature?  | no <!-- don't forget to update src/**/CHANGELOG.md files -->
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no <!-- don't forget to update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | n/a   <!-- #-prefixed issue number(s), if any -->
| License       | MIT
| Doc PR        | n/a

Commits
-------

4a8306e [PropertyInfo] Minor cleanup and perf improvement

Extractor/PhpDocExtractor.php

@@ -111,7 +111,7 @@ public function getTypes($class, $property, array $context = array())
             $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 @@ public function getTypes($class, $property, array $context = array())
             return;
         }
 
-        if (!in_array($prefix, ReflectionExtractor::$arrayMutatorPrefixes)) {
+        if (!\in_array($prefix, ReflectionExtractor::$arrayMutatorPrefixes)) {
             return $types;
         }
 
@@ -386,7 +386,7 @@ private function normalizeType($docType)
      */
     private function getPhpTypeAndClass($docType)
     {
-        if (in_array($docType, Type::$builtinTypes)) {
+        if (\in_array($docType, Type::$builtinTypes)) {
             return array($docType, null);
         }
 

Extractor/ReflectionExtractor.php

@@ -161,7 +161,7 @@ private function extractFromMutator($class, $property)
             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 @@ private function extractFromAccessor($class, $property)
             return array($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));
         }
     }

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>
  */

PropertyInfoExtractor.php

@@ -112,7 +112,7 @@ public function isWritable($class, $property, array $context = array())
     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;
             }