Rule `void_return`¶

Add void return type to functions with missing or empty return statements, but priority is given to @return annotations.

Warnings¶

Modifies the signature of functions.

You can configure this rule using the following option: fix_lambda.

Whether to fix lambda functions as well.

Allowed types: bool

Default value: true

Default configuration.

--- Original
+++ New
 <?php

 class Foo
 {
-    public function hello()
+    public function hello(): void
     {
-        $hello = function($a) { echo 'Hello '.$a; };
+        $hello = function($a): void { echo 'Hello '.$a; };
         echo $hello('World');
     }
 }

With configuration: ['fix_lambda' => false].

--- Original
+++ New
 <?php

 class Foo
 {
-    public function hello()
+    public function hello(): void
     {
         $hello = function($a) { echo 'Hello '.$a; };
         echo $hello('World');
     }
 }

The rule is part of the following rule sets:

The test class defines officially supported behaviour. Each test case is a part of our backward compatibility promise.