Wordpress流行的标签机制

This is a general concept question, how does wordpress calculate the popular tags? I have tried to experiment with get_tags

$tags = get_tags(array(
  'order' => 'DESC',
  'orderby' => 'count',
  'number' => 10,
  'pad_counts' => true,
  'hide_empty' => true
));
foreach ($tags as $tag) {
    echo '$tag->count';
}

I tried to repeated visit a page with certain tag, but it doesn't tell me how popular the tag is. How would I know if a tag is popular or not? I would like to find out which variable or parameter is responsible for the tag popularity. Thanks much!

Use wp_tag_cloud and orderby => count so it will return most popular tag first then other popular as so on.

It will show tags by its usage in posts by count.

$tags = wp_tag_cloud(array(
    'echo' => false,
    'orderby' => 'count',
    'order' => 'DESC'
));
foreach ($tags as $tag) {
    echo '$tag->count';
}