AddParamArrayDocblockFromDimFetchAccessRector

Find another rule

Add @param docblock array type, based on array dim fetch access

 final class SomeClass
 {
+    /**
+     * @param array<string, mixed> $data
+     */
     public function process(array $data): void
     {
         $item = $data['key'];

         $anotherItem = $data['another_key'];
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\TypeDeclarationDocblocks\Rector\ClassMethod\AddParamArrayDocblockFromDimFetchAccessRector;

return RectorConfig::configure()
    ->withRules([
        AddParamArrayDocblockFromDimFetchAccessRector::class,
    ]);