Rule no_trailing_whitespace Remove trailing whitespace at the end of non-blank lines. Examples Example #1 --- Original +++ New <?php -$a = 1; +$a = 1; Rule sets The rule is part of the following rule sets: @PER @PER-CS @PER-CS1.0 @PER-CS2.0 @PSR2 @PSR12 @PhpCsFixer @Symfony Source class PhpCsFixer\Fixer\Whitespace\NoTrailingWhitespaceFixer