Comment Queries

You can retrieve comments using the WP_Comment_Query class. When WordPress tries to load a single post, it constructs one of these objects in order to retrieve the number of comments it has, ready for when it's displayed later on.

This is a basic comment query:

$args = array(
   // args here
);

// The Query
$comments_query = new WP_Comment_Query();
$comments = $comments_query->query( $args );

// Comment Loop
if ( $comments ) {
    foreach ( $comments as $comment ) {
        echo '<p>' . $comment->comment_content . '</p>';
    }
} else {
    echo 'No comments found.';
}

Comment queries can find comments of different types across multiple or single posts. Using a comment query can be faster than a raw SQL command thanks to the built cache system.