从get_category_parents（wordpress）排除类别

Question

我正在寻找一种方法来从我的面包屑主题的get_category_parents中排除ID为3和4的类别。这是代码，有问题的线是11：

function the_breadcrumb() { 
global $post; 
if (!is_home()) { 
    echo '<a href="'.get_option('home').'">'.home.'</a>'; 
    if (is_category()) { 
     echo "/"; 
     echo single_cat_title(); 
    } elseif(is_single() && !is_attachment()) { 
     $cat = get_the_category(); $cat = $cat[0]; 
     echo "/"; 
     echo get_category_parents($cat, TRUE, ' ' . $delimiter . ' '); 
     echo "/"; 
     echo thman_get_limited_string($post->post_title,30); 
    }  
    elseif (is_search()) { 
     echo "/" . cerca; 
    }  
    elseif (is_page() && $post->post_parent) { 
     echo '/<a href="'.get_permalink($post->post_parent).'">'; 
     echo get_the_title($post->post_parent); 
     echo "</a>/"; 
     echo thman_get_limited_string($post->post_title,30);   
    } 
    elseif (is_page() OR is_attachment()) { 
     echo "/"; 
     echo thman_get_limited_string($post->post_title,30); 
    } 
    elseif (is_author()) { 
     echo wp_title('/Profilo'); 
     echo ""; 
    } 
    elseif (is_404()) { 
     echo "/"; 
     echo errore_404; 
    }  
    elseif (is_archive()) { 
     echo wp_title('/');  
    } 
} 
    } 

Answer 1

$cat = get_the_category(); 
$cat = $cat[0]->term_id; 
// next will return an array of all category ancestors, with toplevel cat being [0] 
$ancestors = array_reverse(get_ancestors($cat, 'category')); 
if($ancestors) { 
    // set up output 
    $output = ''; 
    foreach($ancestors as $cat) { 
    // skips cats 3 and 4 
    if($cat == '3' || $cat == '4') continue; 
    $catlink = get_category_link($cat); 
    $catname = get_cat_name($cat); 
    $output .= '<a href="' . $catlink . '">' . $catname . '</a>' . "\n"; 
    } 
} 

echo $output; 

这是把我的头顶部，但我相信这是正确的。

Answer 2

谢谢shelly答案，但我不是php的专家，所以我的完整代码应该看起来像这样？

function the_breadcrumb() { 
global $post; 
if (!is_home()) { 
    echo '<a href="'.get_option('home').'">'.home.'</a>'; 
    if (is_category()) { 
     echo "/"; 
     echo single_cat_title(); 
    } elseif(is_single() && !is_attachment()) { 
     $cat = get_the_category(); $cat = $cat[0]->term_id; 
    // next will return an array of all category ancestors, with toplevel cat being [0] 
    $ancestors = array_reverse(get_ancestors($cat, 'category'); 
    if($ancestors) { 
    // set up output 
    $output = ''; 
    foreach($ancestor as $cat) { 
    // skips cats 3 and 4 
    if($cat == '3' || $cat == '4') continue; 
    $catlink = get_category_link($cat); 
    $catname = get_cat_name($cat); 
    $output .= '<a href="' . $catlink . '">' . $catname . '</a>' . "\n"; 
    } 
    } 
    echo $output; 
     echo "/"; 
     echo get_category_parents($cat, TRUE, ' ' . $delimiter . ' '); 
     echo "/"; 
     echo the_title_shorten(45,'...'); 
    }  
    elseif (is_search()) { 
     echo "/" . cerca; 
    }  
    elseif (is_page() && $post->post_parent) { 
     echo '/<a href="'.get_permalink($post->post_parent).'">'; 
     echo get_the_title($post->post_parent); 
     echo "</a>/"; 
     echo the_title_shorten(45,'...');  
    } 
    elseif (is_page() OR is_attachment()) { 
     echo "/"; 
     echo the_title_shorten(45,'...'); 
    } 
    elseif (is_author()) { 
     echo wp_title('/Profilo'); 
     echo ""; 
    } 
    elseif (is_404()) { 
     echo "/"; 
     echo errore_404; 
    }  
    elseif (is_archive()) { 
     echo wp_title('/');  
    } 
} 
    } 

Answer 3

感谢在座的各位， 我最后得到的代码工作：

$ancestors = array_reverse(get_ancestors(get_cat_ID(single_cat_title("", false)), 'category')); 
$cat_parent_and_cat = ''; 
if($ancestors) { 
    foreach($ancestors as $cat) {    
     //if($cat == '3' || $cat == '4') continue; // skips cats 3 and 4 
     $catlink = get_category_link($cat); 
     $catname = get_cat_name($cat); 
     $cat_parent_and_cat .= '<a href="' . $catlink . '">' . $catname . '</a>' . ' &rsaquo; ' ; 
    } 
} 
echo $cat_parent_and_cat; 

希望这将帮助别人