Merge branch '4.4' into 5.1

* 4.4:
  CS: Apply ternary_to_null_coalescing fixer

Author: derrabus

Definition.php

@@ -479,7 +479,7 @@ public function getTags()
      */
     public function getTag(string $name)
     {
-        return isset($this->tags[$name]) ? $this->tags[$name] : [];
+        return $this->tags[$name] ?? [];
     }
 
     /**

Loader/YamlFileLoader.php

@@ -559,7 +559,7 @@ private function parseDefinition(string $id, $service, string $file, array $defa
             }
         }
 
-        $tags = isset($service['tags']) ? $service['tags'] : [];
+        $tags = $service['tags'] ?? [];
         if (!\is_array($tags)) {
             throw new InvalidArgumentException(sprintf('Parameter "tags" must be an array for service "%s" in "%s". Check your YAML syntax.', $id, $file));
         }
@@ -615,8 +615,8 @@ private function parseDefinition(string $id, $service, string $file, array $defa
                 throw new InvalidArgumentException(sprintf('Invalid value "%s" for attribute "decoration_on_invalid" on service "%s". Did you mean "exception", "ignore" or null in "%s"?', $decorationOnInvalid, $id, $file));
             }
 
-            $renameId = isset($service['decoration_inner_name']) ? $service['decoration_inner_name'] : null;
-            $priority = isset($service['decoration_priority']) ? $service['decoration_priority'] : 0;
+            $renameId = $service['decoration_inner_name'] ?? null;
+            $priority = $service['decoration_priority'] ?? 0;
 
             $definition->setDecoratedService($decorates, $renameId, $priority, $invalidBehavior);
         }
@@ -666,8 +666,8 @@ private function parseDefinition(string $id, $service, string $file, array $defa
             if (!\is_string($service['resource'])) {
                 throw new InvalidArgumentException(sprintf('A "resource" attribute must be of type string for service "%s" in "%s". Check your YAML syntax.', $id, $file));
             }
-            $exclude = isset($service['exclude']) ? $service['exclude'] : null;
-            $namespace = isset($service['namespace']) ? $service['namespace'] : $id;
+            $exclude = $service['exclude'] ?? null;
+            $namespace = $service['namespace'] ?? $id;
             $this->registerClasses($definition, $namespace, $service['resource'], $exclude);
         } else {
             $this->setDefinition($id, $definition);
@@ -841,7 +841,7 @@ private function resolveServices($value, string $file, bool $isParameter = false
                 $instanceof = $this->instanceof;
                 $this->instanceof = [];
 
-                $id = sprintf('.%d_%s', ++$this->anonymousServicesCount, preg_replace('/^.*\\\\/', '', isset($argument['class']) ? $argument['class'] : '').$this->anonymousServicesSuffix);
+                $id = sprintf('.%d_%s', ++$this->anonymousServicesCount, preg_replace('/^.*\\\\/', '', $argument['class'] ?? '').$this->anonymousServicesSuffix);
                 $this->parseDefinition($id, $argument, $file, []);
 
                 if (!$this->container->hasDefinition($id)) {

Tests/Fixtures/includes/ProjectExtension.php

@@ -17,10 +17,10 @@ public function load(array $configs, ContainerBuilder $configuration)
         }
 
         $configuration->register('project.service.bar', 'FooClass')->setPublic(true);
-        $configuration->setParameter('project.parameter.bar', isset($config['foo']) ? $config['foo'] : 'foobar');
+        $configuration->setParameter('project.parameter.bar', $config['foo'] ?? 'foobar');
 
         $configuration->register('project.service.foo', 'FooClass')->setPublic(true);
-        $configuration->setParameter('project.parameter.foo', isset($config['foo']) ? $config['foo'] : 'foobar');
+        $configuration->setParameter('project.parameter.foo', $config['foo'] ?? 'foobar');
 
         return $configuration;
     }