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 test {
-	private static function just_a_test(string $foo, array $bar, $used_parameter): void
+	private static function just_a_test(string $foo, array $used_parameter): void
 	{
 		\external::whatever($foo, $used_parameter);
 	}

PHP snippet to change

<?php

class test {
	private static function just_a_test(string $foo, array $bar, $used_parameter): void
	{
		\external::whatever($foo, $used_parameter);
	}

	public static function trigger(): void
	{
		self::just_a_test('hello', [], 'test');
	}
}

Applied Rules:

RemoveUnusedPrivateMethodParameterRector
AddMethodCallBasedStrictParamTypeRector

Not a change you expect?

Create an issue on GitHub

Config rector.php

<?php

use Rector\Config\RectorConfig;

return RectorConfig::configure()
    ->withPhpSets(php84: true)
    ->withPreparedSets(
        deadCode: true,
        codeQuality: true,
        codingStyle: true,
        typeDeclarations: true,
        privatization: true
    );

Rector version: 529c84 - released at 2025-08-22 22:26