ループ内でカテゴリ、タグ表示

$categories = get_the_category();
if ( $categories ) {
    echo '<p>';
    foreach( $categories as $category ) {
        echo $category->name . ' ';
    }
    echo '</p>';
}
$posttags = get_the_tags();
if ( $posttags ) {
    echo '<p>';
  foreach ( $posttags as $tag ) {
    echo $tag->name . ' '; 
  }
    echo '</p>';
}