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1. horkyze
   Member
   Posted 1 year ago #
   

   Recently I needed a function that will return only language-switching urls. When people are using many languages and pages and they want to create their own language switcher, the possibilities provided in
   function the_languages($args = '')
   or simply
   pll_the_languages($args )
   are not enough unless function is modified.
   I modify it, so it will return the array of urls corresponding to each language. Here is the code:
   

   // displays (or returns) the language switcher
   	function the_languages($args = '') {
   		$defaults = array(
   			'only_urls' => 0,
   			'dropdown' => 0, // display as list and not as dropdown
   			'echo' => 1, // echoes the list
   			'hide_if_empty' => 1, // hides languages with no posts (or pages)
   			'menu' => '0', // not for nav menu
   			'show_flags' => 0, // don't show flags
   			'show_names' => 1, // show language names
   			'display_names_as' => 'name', // valid options are slug and name
   			'force_home' => 0, // tries to find a translation (available only if display != dropdown)
   			'hide_if_no_translation' => 0, // don't hide the link if there is no translation
   			'hide_current' => 0, // don't hide current language
   		);
   		extract(wp_parse_args($args, $defaults));
   
   		if ($only_urls)
   		{
   			$echo = 0;
   			$show_flags = 0;
   			$show_names = 0;
   			$dropdown = 0;
   			$urls = array();
   		}
   
   		if ($dropdown)
   			$output = $this->dropdown_languages(array('hide_empty' => $hide_if_empty, 'selected' => $this->curlang->slug));
   
   		else {
   			$output = '';
   
   			foreach ($this->get_languages_list($hide_if_empty) as $language) {
   				// hide current language
   				if ($this->curlang->term_id == $language->term_id && $hide_current)
   					continue;
   
   				$url = $force_home ? null : $this->get_translation_url($language);
   				$url = apply_filters('pll_the_language_link', $url, $language->slug, $language->description);
   
   				// hide if no translation exists
   				if (!isset($url) && $hide_if_no_translation)
   					continue;
   
   				$url = isset($url) ? $url : $this->get_home_url($language); // if the page is not translated, link to the home page
   
   				$class = 'lang-item lang-item-'.esc_attr($language->term_id);
   				$class .= $language->term_id == $this->curlang->term_id ? ' current-lang' : '';
   				$class .= $menu ? ' menu-item' : '';
   
   				$flag = $show_flags ? $this->get_flag($language) : '';
   				$name = $show_names || !$show_flags ? esc_html($display_names_as == 'slug' ? $language->slug : $language->name) : '';
   
   				$output .= sprintf("<li class='%s'><a hreflang='%s' href='%s'>%s</a></li>\n",
   					$class, esc_attr($language->slug), esc_url($url), $show_flags && $show_names ? $flag.'&nbsp;'.$name : $flag.$name);
   				$urls[esc_attr($language->slug)] = esc_url($url);
   			}
   		}
   
   		if ($only_urls)
   		{
   			return $urls;
   		}
   
   		$output = apply_filters('pll_the_languages', $output, $args);
   
   		if(!$echo)
   			return $output;
   		echo $output;
   	}

   I just added one more argument: only_urls, which ignores all other arguments and an array containing language urls is returned.
   Example:
   Array ( [en] => http://localhost/wordpress/about-us/ [sk] => http://localhost/wordpress/o-nas/ )

   I find it useful, so I shared.

   http://wordpress.org/extend/plugins/polylang/

2. Chouby
   Member
   Plugin Author
   Posted 1 year ago #
   

   Thanks for sharing. I propose the following alternative without modifying the plugin which is better for future upgrade:
   

   add_filter('pll_the_languages', 'my_pll_urls');
   function my_pll_urls($output, $args) {
   	if (isset($args['only_urls']) && $args['only_urls']) {
   		preg_match_all("#hreflang='([a-z]{2})' href='(.+)'#", $output, $matches);
   		return array_combine($matches[1], $matches[2]);
   	}
   	return $output;
   }

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