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:

 class Banana {
 
     public function example(mixed $value): bool {
-        if (is_array($value) && empty(array_filter($value))) {
+        if (array_filter($value) === []) {
             return true;
         }

PHP snippet to change

<?php

class Banana {

    public function example(mixed $value): bool {
        if (is_array($value) && empty(array_filter($value))) {
            return true;
        }
        
        return false;
    }

}

Applied Rules:

SimplifyEmptyArrayCheckRector

Not a change you expect?

Create an issue on GitHub
...or to speed up fix – add a test fixture

Config rector.php

<?php

use Rector\Config\RectorConfig;

return RectorConfig::configure()
    ->withCodeQualityLevel(1);

Rector version: 5bbc5e - released at 2025-08-26 00:54