void

README.md

@@ -101,7 +101,7 @@ add_filter('the_content', [$foo, 'filterSomething'])
 In WordPress plus container, the above is similar to:
 
 ```php
-add_action('admin_init', function ($arg) use ($container): void {
+add_action('admin_init', function ($arg) use ($container) {
   $bar = $container->get('bar');
   $bar->doSomething($arg);
 })

src/ContainerAwareInterface.php

@@ -16,7 +16,7 @@ interface ContainerAwareInterface
      *
      * @return void
      */
-    public function setContainer(ContainerInterface $container): void;
+    public function setContainer(ContainerInterface $container);
 
     /**
      * Get the container.

src/ContainerAwareTrait.php

@@ -39,7 +39,7 @@ public function getContainer(): ContainerInterface
      *
      * @return void
      */
-    public function setContainer(ContainerInterface $container): void
+    public function setContainer(ContainerInterface $container)
     {
         $this->container = $container;
     }

src/Hooks/Action.php

@@ -9,7 +9,7 @@ class Action extends AbstractHook
     /**
      * {@inheritdoc}
      */
-    public function register(): void
+    public function register()
     {
         add_action(
             $this->hook,
@@ -26,11 +26,11 @@ public function register(): void
      *
      * @return void
      */
-    public function run(...$args): void
+    public function run(...$args)
     {
         $container = $this->getContainer();
         $instance = $container->get($this->classIdentifier);
 
-        call_user_func_array([$instance, $this->callbackMethod], $args);
+        $instance->{$this->callbackMethod}(...$args);
     }
 }

src/Hooks/Filter.php

@@ -9,7 +9,7 @@ class Filter extends AbstractHook
     /**
      * {@inheritdoc}
      */
-    public function register(): void
+    public function register()
     {
         add_filter(
             $this->hook,
@@ -31,6 +31,6 @@ public function run(...$args)
         $container = $this->getContainer();
         $instance = $container->get($this->classIdentifier);
 
-        return call_user_func_array([$instance, $this->callbackMethod], $args);
+        return $instance->{$this->callbackMethod}(...$args);
     }
 }

src/Hooks/HookInterface.php

@@ -17,7 +17,7 @@ interface HookInterface extends ContainerAwareInterface
      *
      * @return void
      */
-    public function register(): void;
+    public function register();
 
     /**
      * The actual callback that WordPress going to fire.

src/Loader.php

@@ -42,7 +42,7 @@ public function __construct(ContainerInterface $container)
      *
      * @return void
      */
-    public function add(HookInterface ...$hooks): void
+    public function add(HookInterface ...$hooks)
     {
         $this->hooks = array_values(
             array_unique(
@@ -57,7 +57,7 @@ public function add(HookInterface ...$hooks): void
      *
      * @return void
      */
-    public function run(): void
+    public function run()
     {
         foreach ($this->hooks as $hook) {
             $hook->setContainer($this->container);