How to show only Parent Category name in single.php? (wordpress)

2 comments

1. I think you try this code:
   for me this is working…………

   <?php $parentscategory ="";
   foreach((get_the_category()) as $category) {
   if ($category->category_parent == 0) {
   $parentscategory .= ' <a href="' . get_category_link($category->cat_ID) . '" title="' . $category->name . '">' . $category->name . '</a>, ';
   }
   }
   echo substr($parentscategory,0,-2); ?>
   

2. <?php 
       $get_parent_cats = array(
           'parent' => '0' //get top level categories only
       ); 
       $all_cats = get_categories( $get_parent_cats );
   
       foreach( $all_categories as $single_category ){
   
          $catID = $single_category->cat_ID;
       }
   

   ?>

          echo '<li><a href=" ' . get_category_link( $catID ) . ' ">' . $single_category->name . '</a>'
   

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