wordpress中排除分类Widget指定分类的例子

add_filter( 'widget_categories_args', 'mk_exclude_widget_category', 10, 1 );
function mk_exclude_widget_category( $cat_args ) {
    $cat_args['exclude'] = array(18,19,20,21,22); /*这里的数组内的数字就是要排除的分类目录的id*/
    return $cat_args;
}

function shailan_filter_terms( $exclusions, $args ){
// IDs of terms to be excluded
$exclude = "3,257"; // CHANGE THIS TO IDs OF YOUR TERMS
// Generation of exclusion SQL code
$exterms = wp_parse_id_list( $exclude );
foreach ( $exterms as $exterm ) {
if ( empty($exclusions) )
$exclusions = ' AND ( t.term_id <> ' . intval($exterm) . ' ';
else
$exclusions .= ' AND t.term_id <> ' . intval($exterm) . ' ';
}
// Closing bracket
if ( !empty($exclusions) )
$exclusions .= ')';
// Return our SQL statement
return $exclusions;
}
// Finally hook up our filter
add_filter( 'list_terms_exclusions', 'shailan_filter_terms', 10, 2 );