wordpress获取分类的顶级分类

wordpress子分类获取父分类

方法一

$p_id = get_the_ID();  $cat_srt = get_category_parents(get_the_category($p_id)[0] ,false, ‘|’);  $catParentName = explode(‘|’,$cat_srt)[0];  

方法二
wordpress获取分类的顶级父类
第一个函数(get_term_top_most_parent)接受一个分类ID和分类 ​​,并返回分类的顶级父类(或本身);

第二功能(hey_top_parents)工作在循环中,以及,给定的分类法,返回后的分类顶层祖先。

// determine the topmost parent of a term  function get_term_top_most_parent($term_id, $taxonomy){      // start from the current term      $parent  = get_term_by( ‘id’, $term_id, $taxonomy);      // climb up the hierarchy until we reach a term with parent = ‘0’      while ($parent->parent != ‘0’){          $term_id = $parent->parent;            $parent  = get_term_by( ‘id’, $term_id, $taxonomy);      }      return $parent;  }    // so once you have this function you can just loop over the results returned by wp_get_object_terms    function hey_top_parents($taxonomy, $results = 1) {      // get terms for current post      $terms = wp_get_object_terms( get_the_ID(), $taxonomy );      // set vars      $top_parent_terms = array();      foreach ( $terms as $term ) {          //get top level parent          $top_parent = get_term_top_most_parent( $term->term_id, $taxonomy );          //check if you have it in your array to only add it once          if ( !in_array( $top_parent, $top_parent_terms ) ) {              $top_parent_terms[] = $top_parent;          }      }      // build output (the HTML is up to you)          foreach ( $top_parent_terms as $term ) {              $r = ‘<ul>’;            $r .= ‘<li><a href=”‘.%20get_term_link(%20$term->slug,%20$taxonomy%20)%20.%20′”>’ . $term->name . ‘</a></li>’;      }            $r .= ‘</ul>’;        // return the results      return $r;    } 
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