Rector\TypeDeclaration\Rector\FunctionLike\AddClosureParamTypeForArrayReduceRector

AddClosureParamTypeForArrayReduceRector

Applies type hints to array_map closures

-array_reduce($strings, function ($carry, $value, $key): string {
+array_reduce($strings, function (string $carry, string $value): string {
     return $carry . $value;
 }, $initialString);

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\FunctionLike\AddClosureParamTypeForArrayReduceRector;

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