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 OtherClass {
         public function getSomeNameSpaceClassName(): string
         {
-            return '\SomeNamespace\SomeClass';
+            return \SomeNamespace\SomeClass::class;
         }
     }
 }

PHP snippet to change

<?php
 
namespace SomeNamespace {
	class SomeClass {
    }
}

namespace OtherNamespace {
    class OtherClass {
        public function getSomeNameSpaceClassName(): string
        {
            return '\SomeNamespace\SomeClass';
        }
    }
}

Applied Rules:

StringClassNameToClassConstantRector

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\ValueObject\PhpVersion;

return RectorConfig::configure()
    ->withRules([
        \Rector\Php55\Rector\String_\StringClassNameToClassConstantRector::class,
    ])
    // demonstrate specific PHP version
    ->withPhpVersion(PhpVersion::PHP_83);

Rector version: b1899f - released at 2026-04-02 18:19