计算数组逗号分隔值

我正在使用此函数来获取 WordPress 中的自定义元字段数组

$my_var = get_meta_values( 'keywords' );
if( !empty( $my_var ) ) {
    $meta_counts = array();
    foreach( $my_var as $meta_value )
        $meta_counts[$meta_value] = ( isset( $meta_counts[$meta_value] ) ) ? $meta_counts[$meta_value] + 1 : 1;
}
print_r ($meta_counts);

它生成的数组看起来像

Array ( 
  [one, two, three, four and five, six and seven] => 1 
  [clean, ajax one, two three, four five] => 1 
  [] => 1 
  [this is a test, working] => 1 
  [asdfasdf] => 1 
  [last test] => 1 
)

如何获得以逗号分隔的每个单词或短语的总数。不是每个单独的单词。在上面的数组中，计数为 13

Thanks

你可以得到13单词或短语由此

$words = array_map('trim', explode(',', implode(',', array_keys($meta_counts))));