Try Rector Online | Rector - Automated Way to Instantly Upgrade and Refactor any PHP code

Run Rector on your code to see what it can do for you:

<?php

class DemoFile
{
    /**
     * @param string $foo
     *
     * @return int
     */
    public function doStuff($foo)
    {
        return 42;
    }
}

What did Rector change?

@@ -2,13 +2,8 @@
 
 class DemoFile
 {
-    /**
-     * @param string $foo
-     *
-     * @return int
-     */
-    public function doStuff($foo)
+    public function doStuff(string $foo): int
     {
         return 42;
     }
 }

Applied Rules:

Is the result wrong?

Create an issue

Config rector.php

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Set\ValueObject\LevelSetList;
use Rector\TypeDeclaration\Rector\FunctionLike\ParamTypeDeclarationRector;
use Rector\TypeDeclaration\Rector\FunctionLike\ReturnTypeDeclarationRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->sets([
        LevelSetList::UP_TO_PHP_81,
    ]);

    $rectorConfig->rule(ParamTypeDeclarationRector::class);
    $rectorConfig->rule(ReturnTypeDeclarationRector::class);
};

Rector version: 53f549 - released at 2023-04-01 20:26