In the last days we digged into deeps of Tripadvisor API adding a wordpress widget to our Koh Samui directory project:

Until now did not have time to package the function as a wordpress plugin, besides can share the work done.

First of all: exists already a good plugin for wordpress.
But it lacks of one fundamental feature: the tripdavisor ID parameter has to be inserted in configuration: the widget can not be inserted once for working with several posts, that is what we would like to do.

Update: the code below is outdated, you can download a zipfile in wordpress plugin format.

Our solution:

1. Add “tripadvisor_url” custom Field to posts and assign as value the tripadvisor URL of the hotel
2. Added the class below to our functions.php theme file (I know, it’s a quick and dirty solution)
class tripadvisor extends WP_Widget {
        function tripadvisor() {
                $widget_ops = array('classname' => 'widget Tripadvisor', 'description' => 'Tripadvisor widget' );
                $this->WP_Widget('tripadvisor', 'SAMUIWEB → Tripadvisor', $widget_ops);

	function widget($args, $instance) {
        // prints the widget

                extract($args, EXTR_SKIP);
                echo $before_widget;
                $title = empty($instance['title']) ? '' : apply_filters('widget_title', $instance['title']);
                        <?php if($title){?>
            <h3 class="clearfix"><span class="fl"><?php echo $title; ?></span></h3>
                 <?php       }

            global $wpdb,$rating_table_name,$thumb_url,$post;

       $sql = " select $wpdb->postmeta.meta_value as url from $wpdb->postmeta  where  $wpdb->postmeta.post_id = '".$post->ID."' and $wpdb->postmeta.meta_key = 'tripadvisor_url'";

       $res = $wpdb->get_results($sql);

           if (  $res[0]->url != "" ) {

	       // parse url
	       $pattern = "/-d(\d+)/";
               if ( is_numeric($larr[1]) ) {

                 echo "<div id=\"TA_selfserveprop530\" class=\"TA_selfserveprop\" style=\"width: 250px;\"><ul id=\"gHuY6Bgr\" class=\"TA_links b9NoNI3aGFHx\"><li id=\"FzfUc\
Cq1\" class=\"szp5kls9BkE\">reviews of <a target=\"_blank\" href=\"".$res[0]->url."\">".$post->post_title."</a></li>&lt/ul></div>&ltscript src=\"".$larr[1]."&lang=en_US&rating=true&nreviews=5&writereviewlink=true&popIdx=true&iswide=true&border=false\">&lt/script>";



	echo $after_widget;

        function update($new_instance, $old_instance) {
        //save the widget
                $instance = $old_instance;
                $instance['title'] = strip_tags($new_instance['title']);
                $instance['post_number'] = strip_tags($new_instance['post_number']);
                return $instance;

        function form($instance) {
        //widgetform in backend
		$instance = wp_parse_args( (array) $instance, array( 'title' => '') );
		$title = strip_tags($instance['title']);
  <label for="<?php echo $this->get_field_id('title'); ?>">Title:
    <input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo attribute_escape($title); ?>" />

What do you need now is adding the “SAMUIWEB -> Tripadvisor” widget to your sidebar or content.

You can see in action here or here

Note that does not provide a SEO added value because it’s a tripadvisor javascript that load the html. On the other side Google does not see a duplicate content and you will be not penalized in ranking (obviously if your users )