Rule clean_namespace Namespace must not contain spacing, comments or PHPDoc. Examples Example #1 --- Original +++ New <?php -namespace Foo \ Bar; +namespace Foo\Bar; Example #2 --- Original +++ New <?php -echo foo /* comment */ \ bar(); +echo foo\bar(); Rule sets The rule is part of the following rule sets: @PHP80Migration @PHP81Migration @PHP82Migration @PHP83Migration @PhpCsFixer @Symfony Source class PhpCsFixer\Fixer\NamespaceNotation\CleanNamespaceFixer