WP_Comment::get_instance( int $id ): WP_Comment|false

Source

public static function get_instance( $id ) {
	global $wpdb;

	$comment_id = (int) $id;
	if ( ! $comment_id ) {
		return false;
	}

	$_comment = wp_cache_get( $comment_id, 'comment' );

	if ( ! $_comment ) {
		$_comment = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->comments WHERE comment_ID = %d LIMIT 1", $comment_id ) );

		if ( ! $_comment ) {
			return false;
		}

		wp_cache_add( $_comment->comment_ID, $_comment, 'comment' );
	}

	return new WP_Comment( $_comment );
}

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