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
 
 declare(strict_types=1);

 function return_false(): false {
     return false;
 }
-function test(): bool
-{
-    if (!return_false()) {
-        return true;
-    }
-
-    return true;
+function test(): bool
+{
+    return return_false();
 }

PHP snippet to change

<?php

declare(strict_types=1);
function return_false(): false {
    return false;
}
function test(): bool
{
    if (!return_false()) {
        return true;
    }

    return true;
}

Applied Rules:

SimplifyIfReturnBoolRector

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;
use Rector\TypeDeclaration\Rector\Property\TypedPropertyFromAssignsRector;
use Rector\ValueObject\PhpVersion;

return RectorConfig::configure()
    // A. whole set
    ->withPreparedSets(codeQuality: true,
         )
    // demonstrate specific PHP version
    ->withPhpVersion(PhpVersion::PHP_85);

Rector version: 2.5.4 - released at 2026-07-05 23:08