代码：
function custom_tag_cloud_widget() {
$args = array(
'smallest' => 8,
'largest' => 22,
'unit' => 'pt',
'number' => 15,
'format' => 'flat',
'separator' => "n",
'orderby' => 'name',
'order' => 'ASC',
'exclude' => '',
'include' => '',
'link' => 'view',
'taxonomy' => 'post_tag',
'post_type' => '',
'echo' => true
);
return $args;
}
add_filter( 'widget_tag_cloud_args', 'custom_tag_cloud_widget' );
