diff --git a/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php b/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
index 4ab64b428c..6e4e112842 100644
--- a/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
+++ b/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
@@ -69,7 +69,9 @@ class DoctrineOrmTypeGuesser implements FormTypeGuesserInterface
             case self::$useDeprecatedConstants ? Type::BOOLEAN : Types::BOOLEAN:
                 return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CheckboxType', [], Guess::HIGH_CONFIDENCE);
             case self::$useDeprecatedConstants ? Type::DATETIME : Types::DATETIME_MUTABLE:
+            // no break
             case self::$useDeprecatedConstants ? Type::DATETIMETZ : Types::DATETIMETZ_MUTABLE:
+            // no break
             case 'vardatetime':
                 return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', [], Guess::HIGH_CONFIDENCE);
             case 'dateinterval':
@@ -79,10 +81,13 @@ class DoctrineOrmTypeGuesser implements FormTypeGuesserInterface
             case self::$useDeprecatedConstants ? Type::TIME : Types::TIME_MUTABLE:
                 return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', [], Guess::HIGH_CONFIDENCE);
             case self::$useDeprecatedConstants ? Type::DECIMAL : Types::DECIMAL:
+            // no break
             case self::$useDeprecatedConstants ? Type::FLOAT : Types::FLOAT:
                 return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\NumberType', [], Guess::MEDIUM_CONFIDENCE);
             case self::$useDeprecatedConstants ? Type::INTEGER : Types::INTEGER:
+            // no break
             case self::$useDeprecatedConstants ? Type::BIGINT : Types::BIGINT:
+            // no break
             case self::$useDeprecatedConstants ? Type::SMALLINT : Types::SMALLINT:
                 return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\IntegerType', [], Guess::MEDIUM_CONFIDENCE);
             case self::$useDeprecatedConstants ? Type::STRING : Types::STRING:
diff --git a/src/Symfony/Bridge/Doctrine/PropertyInfo/DoctrineExtractor.php b/src/Symfony/Bridge/Doctrine/PropertyInfo/DoctrineExtractor.php
index 8917ce4327..bafd97a50c 100644
--- a/src/Symfony/Bridge/Doctrine/PropertyInfo/DoctrineExtractor.php
+++ b/src/Symfony/Bridge/Doctrine/PropertyInfo/DoctrineExtractor.php
@@ -157,8 +157,11 @@ class DoctrineExtractor implements PropertyListExtractorInterface, PropertyTypeE
                 case Type::BUILTIN_TYPE_OBJECT:
                     switch ($typeOfField) {
                         case self::$useDeprecatedConstants ? DBALType::DATE : Types::DATE_MUTABLE:
+                        // no break
                         case self::$useDeprecatedConstants ? DBALType::DATETIME : Types::DATETIME_MUTABLE:
+                        // no break
                         case self::$useDeprecatedConstants ? DBALType::DATETIMETZ : Types::DATETIMETZ_MUTABLE:
+                        // no break
                         case 'vardatetime':
                         case self::$useDeprecatedConstants ? DBALType::TIME : Types::TIME_MUTABLE:
                             return [new Type(Type::BUILTIN_TYPE_OBJECT, $nullable, 'DateTime')];
@@ -177,6 +180,7 @@ class DoctrineExtractor implements PropertyListExtractorInterface, PropertyTypeE
                 case Type::BUILTIN_TYPE_ARRAY:
                     switch ($typeOfField) {
                         case self::$useDeprecatedConstants ? DBALType::TARRAY : 'array':
+                        // no break
                         case 'json_array':
                             return [new Type(Type::BUILTIN_TYPE_ARRAY, $nullable, null, true)];
 
@@ -229,6 +233,7 @@ class DoctrineExtractor implements PropertyListExtractorInterface, PropertyTypeE
     {
         switch ($doctrineType) {
             case self::$useDeprecatedConstants ? DBALType::SMALLINT : Types::SMALLINT:
+            // no break
             case self::$useDeprecatedConstants ? DBALType::INTEGER : Types::INTEGER:
                 return Type::BUILTIN_TYPE_INT;
 
@@ -236,9 +241,13 @@ class DoctrineExtractor implements PropertyListExtractorInterface, PropertyTypeE
                 return Type::BUILTIN_TYPE_FLOAT;
 
             case self::$useDeprecatedConstants ? DBALType::BIGINT : Types::BIGINT:
+            // no break
             case self::$useDeprecatedConstants ? DBALType::STRING : Types::STRING:
+            // no break
             case self::$useDeprecatedConstants ? DBALType::TEXT : Types::TEXT:
+            // no break
             case self::$useDeprecatedConstants ? DBALType::GUID : Types::GUID:
+            // no break
             case self::$useDeprecatedConstants ? DBALType::DECIMAL : Types::DECIMAL:
                 return Type::BUILTIN_TYPE_STRING;
 
@@ -246,15 +255,21 @@ class DoctrineExtractor implements PropertyListExtractorInterface, PropertyTypeE
                 return Type::BUILTIN_TYPE_BOOL;
 
             case self::$useDeprecatedConstants ? DBALType::BLOB : Types::BLOB:
+            // no break
             case 'binary':
                 return Type::BUILTIN_TYPE_RESOURCE;
 
             case self::$useDeprecatedConstants ? DBALType::OBJECT : Types::OBJECT:
+            // no break
             case self::$useDeprecatedConstants ? DBALType::DATE : Types::DATE_MUTABLE:
+            // no break
             case self::$useDeprecatedConstants ? DBALType::DATETIME : Types::DATETIME_MUTABLE:
+            // no break
             case self::$useDeprecatedConstants ? DBALType::DATETIMETZ : Types::DATETIMETZ_MUTABLE:
+            // no break
             case 'vardatetime':
             case self::$useDeprecatedConstants ? DBALType::TIME : Types::TIME_MUTABLE:
+            // no break
             case 'date_immutable':
             case 'datetime_immutable':
             case 'datetimetz_immutable':
@@ -263,7 +278,9 @@ class DoctrineExtractor implements PropertyListExtractorInterface, PropertyTypeE
                 return Type::BUILTIN_TYPE_OBJECT;
 
             case self::$useDeprecatedConstants ? DBALType::TARRAY : 'array':
+            // no break
             case self::$useDeprecatedConstants ? DBALType::SIMPLE_ARRAY : Types::SIMPLE_ARRAY:
+            // no break
             case 'json_array':
                 return Type::BUILTIN_TYPE_ARRAY;
         }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/AboutCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/AboutCommand.php
index e40114abe8..118d0aed27 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/AboutCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/AboutCommand.php
@@ -81,7 +81,7 @@ EOT
             ['<info>PHP</>'],
             new TableSeparator(),
             ['Version', PHP_VERSION],
-            ['Architecture', (PHP_INT_SIZE * 8).' bits'],
+            ['Architecture', (\PHP_INT_SIZE * 8).' bits'],
             ['Intl locale', class_exists('Locale', false) && \Locale::getDefault() ? \Locale::getDefault() : 'n/a'],
             ['Timezone', date_default_timezone_get().' (<comment>'.(new \DateTime())->format(\DateTime::W3C).'</>)'],
             ['OPcache', \extension_loaded('Zend OPcache') && filter_var(ini_get('opcache.enable'), FILTER_VALIDATE_BOOLEAN) ? 'true' : 'false'],
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/NumberToLocalizedStringTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/NumberToLocalizedStringTransformer.php
index 986458bbff..bdd3d2aef2 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataTransformer/NumberToLocalizedStringTransformer.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataTransformer/NumberToLocalizedStringTransformer.php
@@ -171,7 +171,7 @@ class NumberToLocalizedStringTransformer implements DataTransformerInterface
         if (false !== strpos($value, $decSep)) {
             $type = \NumberFormatter::TYPE_DOUBLE;
         } else {
-            $type = PHP_INT_SIZE === 8
+            $type = \PHP_INT_SIZE === 8
                 ? \NumberFormatter::TYPE_INT64
                 : \NumberFormatter::TYPE_INT32;
         }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTypeTest.php
index cb2c2d0a30..dd96d2efe7 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTypeTest.php
@@ -891,7 +891,7 @@ class DateTypeTest extends BaseTypeTest
 
     public function testYearsFor32BitsMachines()
     {
-        if (4 !== PHP_INT_SIZE) {
+        if (4 !== \PHP_INT_SIZE) {
             $this->markTestSkipped('PHP 32 bit is required.');
         }
 
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/ConfigDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/ConfigDataCollector.php
index 673bf5c5fd..5895ef37d7 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/ConfigDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/ConfigDataCollector.php
@@ -64,7 +64,7 @@ class ConfigDataCollector extends DataCollector implements LateDataCollectorInte
             'env' => isset($this->kernel) ? $this->kernel->getEnvironment() : 'n/a',
             'debug' => isset($this->kernel) ? $this->kernel->isDebug() : 'n/a',
             'php_version' => PHP_VERSION,
-            'php_architecture' => PHP_INT_SIZE * 8,
+            'php_architecture' => \PHP_INT_SIZE * 8,
             'php_intl_locale' => class_exists('Locale', false) && \Locale::getDefault() ? \Locale::getDefault() : 'n/a',
             'php_timezone' => date_default_timezone_get(),
             'xdebug_enabled' => \extension_loaded('xdebug'),
diff --git a/src/Symfony/Component/HttpKernel/Tests/DataCollector/ConfigDataCollectorTest.php b/src/Symfony/Component/HttpKernel/Tests/DataCollector/ConfigDataCollectorTest.php
index f2cc4fa0dd..dc455915fa 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DataCollector/ConfigDataCollectorTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DataCollector/ConfigDataCollectorTest.php
@@ -33,7 +33,7 @@ class ConfigDataCollectorTest extends TestCase
         $this->assertSame('testkernel', $c->getAppName());
         $this->assertMatchesRegularExpression('~^'.preg_quote($c->getPhpVersion(), '~').'~', PHP_VERSION);
         $this->assertMatchesRegularExpression('~'.preg_quote((string) $c->getPhpVersionExtra(), '~').'$~', PHP_VERSION);
-        $this->assertSame(PHP_INT_SIZE * 8, $c->getPhpArchitecture());
+        $this->assertSame(\PHP_INT_SIZE * 8, $c->getPhpArchitecture());
         $this->assertSame(class_exists('Locale', false) && \Locale::getDefault() ? \Locale::getDefault() : 'n/a', $c->getPhpIntlLocale());
         $this->assertSame(date_default_timezone_get(), $c->getPhpTimezone());
         $this->assertSame(Kernel::VERSION, $c->getSymfonyVersion());
diff --git a/src/Symfony/Component/Intl/NumberFormatter/NumberFormatter.php b/src/Symfony/Component/Intl/NumberFormatter/NumberFormatter.php
index 7792a1e757..f562c3dbea 100644
--- a/src/Symfony/Component/Intl/NumberFormatter/NumberFormatter.php
+++ b/src/Symfony/Component/Intl/NumberFormatter/NumberFormatter.php
@@ -847,7 +847,7 @@ class NumberFormatter
             return false;
         }
 
-        if (PHP_INT_SIZE !== 8 && ($value > self::$int32Max || $value < -self::$int32Max - 1)) {
+        if (\PHP_INT_SIZE !== 8 && ($value > self::$int32Max || $value < -self::$int32Max - 1)) {
             return (float) $value;
         }
 
diff --git a/src/Symfony/Component/Intl/Resources/bin/common.php b/src/Symfony/Component/Intl/Resources/bin/common.php
index 8ebf9fdc60..5a93e40487 100644
--- a/src/Symfony/Component/Intl/Resources/bin/common.php
+++ b/src/Symfony/Component/Intl/Resources/bin/common.php
@@ -74,7 +74,7 @@ set_error_handler(function ($type, $msg, $file, $line) {
     throw new \ErrorException($msg, 0, $type, $file, $line);
 });
 
-set_exception_handler(function (\Throwable $exception) {
+set_exception_handler(function (Throwable $exception) {
     echo "\n";
 
     $cause = $exception;
diff --git a/src/Symfony/Component/Intl/Tests/DateFormatter/IntlDateFormatterTest.php b/src/Symfony/Component/Intl/Tests/DateFormatter/IntlDateFormatterTest.php
index f6d02dcc00..14100d4d6f 100644
--- a/src/Symfony/Component/Intl/Tests/DateFormatter/IntlDateFormatterTest.php
+++ b/src/Symfony/Component/Intl/Tests/DateFormatter/IntlDateFormatterTest.php
@@ -167,7 +167,7 @@ class IntlDateFormatterTest extends AbstractIntlDateFormatterTest
 
     public function testParseThreeDigitsYears()
     {
-        if (PHP_INT_SIZE < 8) {
+        if (\PHP_INT_SIZE < 8) {
             $this->markTestSkipped('Parsing three digits years requires a 64bit PHP.');
         }
 
diff --git a/src/Symfony/Component/Intl/Util/IntlTestHelper.php b/src/Symfony/Component/Intl/Util/IntlTestHelper.php
index a9f68140f9..7d0174c75c 100644
--- a/src/Symfony/Component/Intl/Util/IntlTestHelper.php
+++ b/src/Symfony/Component/Intl/Util/IntlTestHelper.php
@@ -86,7 +86,7 @@ class IntlTestHelper
      */
     public static function require32Bit(TestCase $testCase)
     {
-        if (4 !== PHP_INT_SIZE) {
+        if (4 !== \PHP_INT_SIZE) {
             $testCase->markTestSkipped('PHP 32 bit is required.');
         }
     }
@@ -96,7 +96,7 @@ class IntlTestHelper
      */
     public static function require64Bit(TestCase $testCase)
     {
-        if (8 !== PHP_INT_SIZE) {
+        if (8 !== \PHP_INT_SIZE) {
             $testCase->markTestSkipped('PHP 64 bit is required.');
         }
     }
diff --git a/src/Symfony/Component/Lock/Store/CombinedStore.php b/src/Symfony/Component/Lock/Store/CombinedStore.php
index d1ffaba653..bd0753bcdf 100644
--- a/src/Symfony/Component/Lock/Store/CombinedStore.php
+++ b/src/Symfony/Component/Lock/Store/CombinedStore.php
@@ -28,8 +28,8 @@ use Symfony\Component\Lock\Strategy\StrategyInterface;
  */
 class CombinedStore implements StoreInterface, LoggerAwareInterface
 {
-    use LoggerAwareTrait;
     use ExpiringStoreTrait;
+    use LoggerAwareTrait;
 
     /** @var StoreInterface[] */
     private $stores;
diff --git a/src/Symfony/Component/VarDumper/Cloner/VarCloner.php b/src/Symfony/Component/VarDumper/Cloner/VarCloner.php
index 07e6b4ca2e..e69e44407c 100644
--- a/src/Symfony/Component/VarDumper/Cloner/VarCloner.php
+++ b/src/Symfony/Component/VarDumper/Cloner/VarCloner.php
@@ -120,7 +120,6 @@ class VarCloner extends AbstractCloner
                     case \is_int($v):
                     case \is_float($v):
                         continue 2;
-
                     case \is_string($v):
                         if ('' === $v) {
                             continue 2;
@@ -310,7 +309,7 @@ class VarCloner extends AbstractCloner
     private static function initHashMask()
     {
         $obj = (object) [];
-        self::$hashOffset = 16 - PHP_INT_SIZE;
+        self::$hashOffset = 16 - \PHP_INT_SIZE;
         self::$hashMask = -1;
 
         if (\defined('HHVM_VERSION')) {
@@ -331,6 +330,6 @@ class VarCloner extends AbstractCloner
             }
         }
 
-        self::$hashMask ^= hexdec(substr(spl_object_hash($obj), self::$hashOffset, PHP_INT_SIZE));
+        self::$hashMask ^= hexdec(substr(spl_object_hash($obj), self::$hashOffset, \PHP_INT_SIZE));
     }
 }