Polylang shortcode for lang switcher

polylang-langswitcher-shortcode.php

<?php
/**
 * Polylang Shortcode - https://wordpress.org/plugins/polylang/
 * Add this code in your functions.php
 * Put shortcode [polylang_langswitcher] to post/page for display flags
 *
 * @return string
 */
function custom_polylang_langswitcher() {
	$output = '';
	if ( function_exists( 'pll_the_languages' ) ) {
		$args   = [
			'show_flags' => 0,
			'show_names' => 1,
			'echo'       => 0,
		];
		$output = '<ul class="polylang_langswitcher">'.pll_the_languages( $args ). '</ul>';
	}

	return $output;
}

add_shortcode( 'polylang_langswitcher', 'custom_polylang_langswitcher' );

CSS para mostrar las banderas en línea y sin viñetas, el relleno es solo para agregar espacio entre los elementos.

CSS to display the flags inline and without bullets, the padding is just to add space between elements.

.lang-item{
display:inline;
padding-left:5px;
list-style:none;
}