wp_list_users() WordPress Function

function wp_list_users( $args = array() ) {
	$defaults = array(
		'orderby'       => 'name',
		'order'         => 'ASC',
		'number'        => '',
		'exclude_admin' => true,
		'show_fullname' => false,
		'feed'          => '',
		'feed_image'    => '',
		'feed_type'     => '',
		'echo'          => true,
		'style'         => 'list',
		'html'          => true,
		'exclude'       => '',
		'include'       => '',
	);

	$args = wp_parse_args( $args, $defaults );

	$return = '';

	$query_args           = wp_array_slice_assoc( $args, array( 'orderby', 'order', 'number', 'exclude', 'include' ) );
	$query_args['fields'] = 'ids';
	$users                = get_users( $query_args );

	foreach ( $users as $user_id ) {
		$user = get_userdata( $user_id );

		if ( $args['exclude_admin'] && 'admin' === $user->display_name ) {
			continue;
		}

		if ( $args['show_fullname'] && '' !== $user->first_name && '' !== $user->last_name ) {
			$name = "$user->first_name $user->last_name";
		} else {
			$name = $user->display_name;
		}

		if ( ! $args['html'] ) {
			$return .= $name . ', ';

			continue; // No need to go further to process HTML.
		}

		if ( 'list' === $args['style'] ) {
			$return .= '<li>';
		}

		$row = $name;

		if ( ! empty( $args['feed_image'] ) || ! empty( $args['feed'] ) ) {
			$row .= ' ';
			if ( empty( $args['feed_image'] ) ) {
				$row .= '(';
			}

			$row .= '<a href="' . get_author_feed_link( $user->ID, $args['feed_type'] ) . '"';

			$alt = '';
			if ( ! empty( $args['feed'] ) ) {
				$alt  = ' alt="' . esc_attr( $args['feed'] ) . '"';
				$name = $args['feed'];
			}

			$row .= '>';

			if ( ! empty( $args['feed_image'] ) ) {
				$row .= '<img src="' . esc_url( $args['feed_image'] ) . '" style="border: none;"' . $alt . ' />';
			} else {
				$row .= $name;
			}

			$row .= '</a>';

			if ( empty( $args['feed_image'] ) ) {
				$row .= ')';
			}
		}

		$return .= $row;
		$return .= ( 'list' === $args['style'] ) ? '</li>' : ', ';
	}

	$return = rtrim( $return, ', ' );

	if ( ! $args['echo'] ) {
		return $return;
	}
	echo $return;
}