Current user shortcode

current-user-shortcode.php

<?php


add_shortcode( 'current_user', __NAMESPACE__ . '\current_user_shortcode' );
/**
 * Description of expected behavior.
 *
 * @since 1.0.0
 *
 * @param $atts
 *
 * @return mixed
 */
function current_user_shortcode( $atts ) {
	if ( is_admin() ) {
		return false;
	}

	$atts = shortcode_atts(
		[
			'avatar' => true,
			'name'   => true,
		],
		$atts,
		'current_user'
	);

	$user = wp_get_current_user();
	$name = $user->user_firstname && $user->last_name ? $user->user_firstname . ' ' . $user->last_name : $user->first_name;

	$html = sprintf(
		'<div class="current-user">%s<small>%s</small></div>',
		get_avatar( $user->ID ),
		$name ? $name : __( 'Guest', 'current-user-shortcode' )
	);

	return apply_filters( 'current_user_shortcode_output', $html, $atts, $user );
}