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I want to include something like the the_category function in a WordPress post, which by default echoes a list of links to all categories the post is attached separated by comma, but I want to exclude some categories from listing in certain views. In some cases I have to exclude all children ones from appearing, in others a top category or random specific categories.

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Not sure but i think you can try this

function my_category_filter($cats){
   //exclude these from displaying
   $exclude = array("Large Announcement", "Announcement", "News");
   $Catds = array();
   foreach ($cats as$cat){
      if (!in_array($cat,$exclude)){$Catsa[] = $cat;}
   return $Catsa;

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