从最后一个项目类别列表中删除逗号wordpress

使用rtrim:

$cats = '';
foreach((get_the_category()) as $category) {
    $cats .= $category->cat_name . ', ';
}
echo rtrim($cats, ', ');

这里有另一种方法,使用 join 功能-

echo join(",",array_map(function($category){return $category->cat_name;}, get_the_category()));

你可以试试这个:

$categories = array();
foreach(get_the_category() as $category) {
    $categories[] = $category->cat_name;
}

echo implode($categories, ',');