- $keywords = ((x($a->profile, 'pub_keywords')) ? $a->profile['pub_keywords'] : '');
- $keywords = str_replace(array(',',' ',',,'), array(' ',',',','), $keywords);
+ $keywords = defaults($a->profile, 'pub_keywords', '');
+ $keywords = str_replace([',',' ',',,'], [' ',',',','], $keywords);