- $indstr = ( $this->getIsHtml() ? "" : str_repeat( ' ', $indent ) );
- $indstr2 = ( $this->getIsHtml() ? "" : str_repeat( ' ', $indent + 2 ) );
- $nl = ( $this->getIsHtml() ? "" : "\n" );
+ $indstr = ( $this->getIsHtml() ? '' : str_repeat( ' ', $indent ) );
+ $indstr2 = ( $this->getIsHtml() ? '' : str_repeat( ' ', $indent + 2 ) );
+ $nl = ( $this->getIsHtml() ? '' : "\n" );