/**
  * Triggers on a change event and adds the relevant URL's to the ban list
  *
  * Function inspired by Varnish HTTP Purge
  * https://github.com/Ipstenu/varnish-http-purge/blob/master/plugin/varnish-http-purge.php#L277
  *
  * @param  [type] $postId [description]
  * @return [type]         [description]
  */
 protected function handleChange($postId)
 {
     // If this is a valid post we want to purge the post, the home page and any associated tags & cats
     // If not, purge everything on the site.
     $validPostStatus = array("publish", "trash");
     $thisPostStatus = get_post_status($postId);
     // If this is a revision, stop.
     if (get_permalink($postId) !== true && !in_array($thisPostStatus, $validPostStatus)) {
         return;
     } else {
         // array to collect all our URLs
         $listofurls = array();
         // Category purge based on Donnacha's work in WP Super Cache
         $categories = get_the_category($postId);
         if ($categories) {
             foreach ($categories as $cat) {
                 $this->invalidateUrl(get_category_link($cat->term_id));
             }
         }
         // Tag purge based on Donnacha's work in WP Super Cache
         $tags = get_the_tags($postId);
         if ($tags) {
             foreach ($tags as $tag) {
                 $this->invalidateUrl(get_tag_link($tag->term_id));
             }
         }
         // Author URL
         $this->invalidateUrl(get_author_posts_url(get_post_field('post_author', $postId)));
         $this->invalidateUrl(get_author_feed_link(get_post_field('post_author', $postId)));
         // Archives and their feeds
         $archiveurls = array();
         if (get_post_type_archive_link(get_post_type($postId)) == true) {
             $this->invalidateUrl(get_post_type_archive_link(get_post_type($postId)));
             $this->invalidateUrl(get_post_type_archive_feed_link(get_post_type($postId)));
         }
         // Post URL
         $this->invalidateUrl(get_permalink($postId));
         // Feeds
         $this->invalidateUrl(get_bloginfo_rss('rdf_url'));
         $this->invalidateUrl(get_bloginfo_rss('rss_url'));
         $this->invalidateUrl(get_bloginfo_rss('rss2_url'));
         $this->invalidateUrl(get_bloginfo_rss('atom_url'));
         $this->invalidateUrl(get_bloginfo_rss('comments_rss2_url'));
         $this->invalidateUrl(get_post_comments_feed_link($postId));
         // Home Page and (if used) posts page
         $this->invalidateUrl(home_url('/'));
         if (get_option('show_on_front') == 'page') {
             $this->invalidateUrl(get_permalink(get_option('page_for_posts')));
         }
     }
     // Filter to add or remove urls to the array of purged urls
     // @param array $purgeUrls the urls (paths) to be purged
     // @param int $postId the id of the new/edited post
     // $this->invalidateUrls = apply_filters( 'vhp_purge_urls', $this->invalidateUrls, $postId );
 }

 public function get_data_original($num = '', $post_id = null)
 {
     global $wpdb, $post;
     if (!isset($post_id)) {
         $post_id = $post->ID;
     }
     if (empty($post_id)) {
         return false;
     }
     $current_tags = get_the_tags($post_id);
     if (!$current_tags) {
         return false;
     }
     $tags = array();
     foreach ((array) $current_tags as $tag) {
         $tags[] = absint($tag->term_id);
     }
     $tag_list = implode(',', $tags);
     if ($num == '') {
         $option = get_option('sirp_options');
         $num = $option['display_num'];
     }
     $q = "SELECT ID FROM {$wpdb->posts} AS p\n\t\t\tINNER JOIN {$wpdb->term_relationships} AS tr ON (p.ID = tr.object_id)\n\t\t\tINNER JOIN {$wpdb->term_taxonomy} AS tt ON (tr.term_taxonomy_id = tt.term_taxonomy_id)\n\t\t\tWHERE (tt.taxonomy = 'post_tag' AND tt.term_id IN ({$tag_list}))\n\t\t\tAND p.post_status = 'publish'\n\t\t\tAND p.post_type = 'post'\n\t\t\tAND p.ID != {$post_id}\n\t\t\tGROUP BY tr.object_id\n\t\t\tORDER BY post_date DESC" . $wpdb->prepare(" LIMIT %d", $num);
     return $wpdb->get_results($q, ARRAY_A);
 }

function dtheme_keywords()
{
    global $s, $post;
    $keywords = '';
    if (is_single()) {
        if (get_the_tags($post->ID)) {
            foreach (get_the_tags($post->ID) as $tag) {
                $keywords .= $tag->name . ', ';
            }
        }
        foreach (get_the_category($post->ID) as $category) {
            $keywords .= $category->cat_name . ', ';
        }
        $keywords = substr_replace($keywords, '', -2);
    } elseif (is_home()) {
        $keywords = dopt('d_keywords');
    } elseif (is_tag()) {
        $keywords = single_tag_title('', false);
    } elseif (is_category()) {
        $keywords = single_cat_title('', false);
    } elseif (is_search()) {
        $keywords = esc_html($s, 1);
    } else {
        $keywords = trim(wp_title('', false));
    }
    if ($keywords) {
        echo "<meta name=\"keywords\" content=\"{$keywords}\" />\n";
    }
}

function wp_aatags_run($post_ID)
{
    $tags = get_option('wp_aatags_opts');
    $number = get_option('wp_aatags_aadnumber');
    global $wpdb;
    if (get_post($post_ID)->post_type == 'post' && !wp_is_post_revision($post_ID) && !get_the_tags($post_ID)) {
        $post_title = get_post($post_ID)->post_title;
        $post_content = get_post($post_ID)->post_content;
        switch ($tags) {
            case 3:
                $requix = strtolower($post_title . ' ' . wp_trim_words($post_content, 333, ''));
                break;
            case 2:
                $requix = strtolower($post_title . ' ' . wp_trim_words($post_content, 999, ''));
                break;
            default:
                $requix = strtolower($post_title);
                break;
        }
        $body = wp_aatags_keycontents(wp_aatags_html2text($requix), $number);
        if ($body != 'rEr') {
            $keywords = wp_aatags_kwsiconv($body);
            wp_add_post_tags($post_ID, $keywords);
        } else {
            wp_aatags_alts($post_ID, $post_title, $post_content);
        }
    }
}

 function render_related_string()
 {
     $settings = C_NextGen_Settings::get_instance();
     $type = $settings->appendType;
     $maxImages = $settings->maxImages;
     $sluglist = array();
     switch ($type) {
         case 'tags':
             if (function_exists('get_the_tags')) {
                 $taglist = get_the_tags();
                 if (is_array($taglist)) {
                     foreach ($taglist as $tag) {
                         $sluglist[] = $tag->slug;
                     }
                 }
             }
             break;
         case 'category':
             $catlist = get_the_category();
             if (is_array($catlist)) {
                 foreach ($catlist as $cat) {
                     $sluglist[] = $cat->category_nicename;
                 }
             }
             break;
     }
     $taglist = implode(',', $sluglist);
     if ($taglist === 'uncategorized' || empty($taglist)) {
         return;
     }
     $renderer = C_Component_Registry::get_instance()->get_utility('I_Displayed_Gallery_Renderer');
     $view = C_Component_Registry::get_instance()->get_utility('I_Component_Factory')->create('mvc_view', '');
     $retval = $renderer->display_images(array('source' => 'tags', 'container_ids' => $taglist, 'display_type' => NEXTGEN_GALLERY_BASIC_THUMBNAILS, 'images_per_page' => $maxImages, 'maximum_entity_count' => $maxImages, 'template' => $view->get_template_abspath('photocrati-nextgen_gallery_display#related'), 'show_all_in_lightbox' => FALSE, 'show_slideshow_link' => FALSE, 'disable_pagination' => TRUE));
     return apply_filters('ngg_show_related_gallery_content', $retval, $taglist);
 }

function wpthemes_post_class($class = '', $post_id = null)
{
    $post = get_post($post_id);
    $classes = array();
    $classes[] = $post->post_type;
    if (is_sticky($post->ID) && is_home()) {
        $classes[] = 'sticky';
    }
    $classes[] = 'hentry';
    foreach ((array) get_the_category($post->ID) as $cat) {
        if (empty($cat->slug)) {
            continue;
        }
        $classes[] = 'category-' . $cat->slug;
    }
    foreach ((array) get_the_tags($post->ID) as $tag) {
        if (empty($tag->slug)) {
            continue;
        }
        $classes[] = 'tag-' . $tag->slug;
    }
    if (!empty($class)) {
        if (!is_array($class)) {
            $class = preg_split('#\\s+#', $class);
        }
        $classes = array_merge($classes, $class);
    }
    return apply_filters('post_class', $classes, $class, $post_id);
}

function get_related_posts()
{
    // an array of tags from the current post
    $related_tags = get_the_tags();
    /*
    	$tag will be used in this example, this is just the first tag
    	from the array.  To optimize the plugin we would want to loop through
    	all of the tags in the $related_tags array and do something more
    	interesting with them.
    */
    $tag = $related_tags[0];
    // The ID of the current post
    $current_post = get_the_id();
    // The arguments for the nested loop
    $args = array('posts_per_page' => 3, 'post__not_in' => array($current_post), 'tag' => $tag->name);
    $related_query = new WP_Query($args);
    if ($related_query->have_posts()) {
        $html = '<h2>Some Related Posts</h2>';
        $html .= '<ul>';
        while ($related_query->have_posts()) {
            $related_query->the_post();
            $html .= '<li>';
            $html .= get_the_title();
            $html .= '</li>';
        }
        $html .= '</ul>';
    }
    return $html;
}

 /**
  * Prints HTML with meta information for the categories, tags and comments.
  */
 function ushipnetwork_entry_footer()
 {
     // Hide category and tag text for pages.
     if ('post' === get_post_type()) {
         $byline = sprintf(esc_html_x('by %s', 'post author', 'ushipnetwork'), '<span class="author vcard"><a class="url fn n" href="' . esc_url(get_author_posts_url(get_the_author_meta('ID'))) . '">' . esc_html(get_the_author()) . '</a></span>');
         echo '<div class="byline">' . '<div class="authorship">' . $byline . '</div>' . '<div class="share">';
         include "share.php";
         echo '</div>' . '</div>';
         $posttags = get_the_tags();
         $count = 0;
         $separator = ', ';
         $output = '';
         if (!empty($posttags)) {
             echo '<span class="tag-list">tags: ';
             foreach ($posttags as $posttag) {
                 $count++;
                 if ($count <= 2) {
                     $output .= '<a href="' . esc_url(get_tag_link($posttag->term_id)) . '" alt="' . esc_attr(sprintf(__('View all posts in %s', 'textdomain'), $posttag->name)) . '">' . esc_html($posttag->name) . '</a>' . $separator;
                 }
             }
             echo trim($output, $separator);
         }
         echo '</span>';
     }
     edit_post_link(sprintf(esc_html__('Edit %s', 'ushipnetwork'), the_title('<span class="screen-reader-text">"', '"</span>', false)), '<span class="edit-link">', '</span>');
 }

 function flatbook_post_metas()
 {
     $user = get_the_author();
     $date = get_the_date('F j');
     $cats = get_the_category();
     $tags = get_the_tags();
     $comm = get_comments_number();
     $type = get_post_format();
     if (false === $type) {
         $type = __('standard', 'flatbook');
     }
     echo '<div class="entry-metas">';
     if ($type) {
         echo '<span class="format"><i class="fa fa-inbox"></i>' . $type . '</span>';
     }
     if ($date) {
         echo '<span class="posted-on"><i class="fa fa-dashboard"></i>' . $date . '</span>';
     }
     if ($user) {
         echo '<span class="byline"><i class="fa fa-user"></i>' . $user . '</span>';
     }
     if ($cats) {
         echo '<span class="cats"><i class="fa fa-folder-open"></i>' . $cats[0]->cat_name . '</span>';
     }
     if ($tags) {
         echo '<span class="tags"><i class="fa fa-tags"></i>' . $tags[0]->name . '</span>';
     }
     if ($comm) {
         echo '<span class="comments"><i class="fa fa-comments"></i>' . $comm . __(' Comment', 'flatbook') . '</span>';
     }
     echo '</div>';
 }

/**
	*获取相关文章
	*http://www.bgbk.org
*/
function Bing_related_posts_ID($post = null)
{
    $post = get_post($post);
    $number = 3;
    $posts = array();
    $tags = get_the_tags($post);
    $exclude_ID = array($post->ID);
    if (!empty($tags)) {
        $tags_ID = array();
        foreach ($tags as $tag) {
            $tags_ID[] = $tag->term_id;
        }
        $posts = get_posts(array('tag__in' => $tags_ID, 'exclude' => $exclude_ID, 'orderby' => 'rand', 'fields' => 'ids', 'numberposts' => $number));
    }
    $cats = get_the_category($post);
    if (count($posts) < $number && !empty($cats)) {
        $cats_ID = array();
        foreach ($cats as $cat) {
            $cats_ID[] = $cat->term_id;
        }
        $_posts = get_posts(array('category__in' => $cats_ID, 'exclude' => array_merge($exclude_ID, $posts), 'orderby' => 'rand', 'fields' => 'ids', 'numberposts' => $number - count($posts)));
        $posts = array_merge($posts, $_posts);
    }
    if (count($posts) < $number) {
        $_posts = get_posts(array('exclude' => array_merge($exclude_ID, $posts), 'orderby' => 'rand', 'fields' => 'ids', 'numberposts' => $number - count($posts)));
        $posts = array_merge($posts, $_posts);
    }
    return $posts;
}

 public function auto_add_tag($title, $post_id)
 {
     global $post;
     $result = '';
     $add_tags = '';
     $i = 0;
     if (in_the_loop()) {
         $p = get_post($post_id);
         $cur_title = $p->post_title;
         $post_tags = get_the_tags($post_id);
         if ($post_tags) {
             foreach ($post_tags as $tag) {
                 //get the first post tag
                 if ($i == 0) {
                     $add_tags .= '[' . $tag->name . '] ';
                 }
                 $i++;
             }
         }
         $result = $add_tags . $cur_title;
     } else {
         $result = $title;
     }
     return $result;
 }

function get_bodyid()
{
    if (is_home()) {
        $bodyid = 'home';
    } elseif (is_archive() and !is_author() and !is_tax() and !is_tag()) {
        $categories = get_the_category();
        foreach ($categories as $category) {
            $cat_id = $category->term_id;
            $cat_parent_id = $category->category_parent;
        }
        if ($cat_parent_id) {
            $cat_name = strtolower(get_the_category_by_id($cat_parent_id));
        } else {
            $cat_name = strtolower(get_the_category_by_id($cat_id));
        }
        $bodyid = $cat_name;
    } elseif (is_archive() and is_author()) {
        $bodyid = 'profile';
    } elseif (is_archive() and is_tax('nh_cities')) {
        $term = get_term_by('slug', get_query_var('term'), get_query_var('taxonomy'));
        $term_name = $term->name;
        $bodyid = 'cities-' . $term_name;
    } elseif (is_archive() and is_tag()) {
        $tags = get_the_tags();
        foreach ($tags as $tag) {
            $tag_name = $tag->name;
        }
        $bodyid = $tag_name;
    } elseif (is_page()) {
        if (is_page('topics')) {
            $bodyid = 'topics';
        } elseif (is_page('cities')) {
            $bodyid = 'cities';
        } elseif (is_page('login')) {
            $bodyid = 'settings';
        } else {
            $bodyid = 'general';
        }
    } elseif (is_single()) {
        $categories = get_the_category();
        foreach ($categories as $category) {
            $cat_id = $category->term_id;
            $cat_parent_id = $category->category_parent;
        }
        if ($cat_parent_id) {
            $cat_name = strtolower(get_the_category_by_id($cat_parent_id));
            $bodyid = $cat_name;
        } else {
            $cat_name = strtolower(get_the_category_by_id($cat_id));
            $bodyid = $cat_name;
        }
        //		if (isset($cat_name)) {
        //			$bodyid = $cat_name;
        //		}
    } elseif (is_search()) {
        $bodyid = 'search';
    }
    return $bodyid;
}

	function widget($args, $instance) {

		global $post;
				
		// don't show widget if we are not on a post page
		if ($post == null || $post->post_type != 'post') {
			echo '<!-- ' . __('Tweet Blender: Not shown as this is not a post', 'tweetblender') . ' -->';
			return;
		}

		// check custom tb_tags field
		$sources = array();
		$custom_fields = get_post_custom($post->ID);
 		$post_tags = get_the_tags($post->ID);
		if (isset($custom_fields['tb_tags'])) {
			foreach($custom_fields['tb_tags'] as $key => $tags) {
				$sources = array_merge($sources,explode(',',$tags));
			}			
		}
		// check general post tags
		elseif (isset($post_tags) && is_array($post_tags) && sizeof($post_tags) > 0) {
			foreach($post_tags as $tag) {
				$sources[] = trim($tag->name);			
			}
		}
		// don't show widget if there are no tags
		else {
			echo '<!-- ' . __('Tweet Blender: Not shown as there are no tags for this post', 'tweetblender') . ' -->';
			return;
		}

		if (sizeof($args) > 0) {
			extract($args, EXTR_SKIP);			
		}
		$tb_o = get_option('tweet-blender');
		
		echo $before_widget;
		$title = empty($instance['title']) ? '&nbsp;' : apply_filters('widget_title', $instance['title']);
		if ( !empty( $title ) ) { echo $before_title . $title . $after_title; };

		$instance['widget_sources'] = join('\n\r',$sources);
			
		// add configuraiton options
		echo '<form id="' . $this->id . '-f" class="tb-widget-configuration">';
		echo '<input type="hidden" name="sources" value="' . addslashes(join(',',$sources)) . '">';
		echo '<input type="hidden" name="refreshRate" value="' . $instance['widget_refresh_rate'] . '">';
		echo '<input type="hidden" name="tweetsNum" value="' . $instance['widget_tweets_num'] . '">';
		echo '</form>';
			
		// print out header and list of tweets
		echo '<div id="'. $this->id . '-mc">';
		echo tb_create_markup($mode = 'widget',$instance,$this->id,$tb_o);

		// print out footer
		echo '<div class="tb_footer"></div>';

		echo '</div>';
		echo $after_widget;
	}

/**
 * Tags as meta keywords
 **/
function meta_keywords()
{
    $posttags = get_the_tags();
    foreach ((array) $posttags as $tag) {
        $meta_keywords .= $tag->name . ',';
    }
    return substr($meta_keywords, 0, -1);
}

 function get_tags_list()
 {
     $tags = get_the_tags();
     if (empty($tags)) {
         return;
     }
     get_view('post-tags', '', compact('tags'));
 }

 public static function getTheTags($postID)
 {
     static $cache = [];
     if (!isset($cache[$postID])) {
         $cache[$postID] = \get_the_tags($postID);
     }
     return $cache[$postID];
 }

function meta_post_keywords()
{
    $posttags = get_the_tags();
    foreach ((array) $posttags as $tag) {
        $meta_post_keywords .= $tag->name . ',';
    }
    echo '<meta name="keywords" content="' . $meta_post_keywords . '" />';
}

function csv_tags_m()
{
    $posttags = get_the_tags();
    foreach ((array) $posttags as $tag) {
        @($csv_tags .= $tag->name . ',');
    }
    echo $csv_tags;
}

function related_posts()
{
    echo "<h3 class=\"dividing-title\">Oglejte si še</h3>";
    $rp_prikazani[0] = get_the_ID();
    //ID glavnega posta, da se ne ponovi v predlogih
    global $post;
    $rp_x = 0;
    //Štetje, koliko postov je bilo izpisanih
    $rp_relacije = get_field('relacije');
    //Funkcija od Advanced custom fields plugina, no plugin no FUN
    //Izpiši ročno izbrane poste
    if ($rp_relacije) {
        $rp_args = array('post__in' => $rp_relacije);
        $rp_post_array = get_posts($rp_args);
        foreach ($rp_post_array as $post) {
            setup_postdata($post);
            rp_izpis();
            $rp_prikazani[$rp_x + 1] = get_the_ID();
            $rp_x++;
        }
        wp_reset_postdata();
    }
    //Če niso izbrani 4 posti, poišči dodatne, glede na kategorijo ali tag
    if ($rp_x < 4) {
        $rp_categories = get_the_category();
        foreach ($rp_categories as $rp_category) {
            if ($rp_category->term_id != get_cat_ID("prva_stran1") and $rp_category->term_id != get_cat_ID("prva_stran2") and $rp_category->term_id != get_cat_ID("prva_stran3") and $rp_category->term_id != get_cat_ID("slider")) {
                $rp_cat_list[] = $rp_category->term_id;
            }
        }
        $rp_oznake = get_the_tags();
        $rp_tag_list = array();
        if (is_array($rp_oznake)) {
            foreach ($rp_oznake as $rp_oznaka) {
                $rp_tag_list[] = $rp_oznaka->term_id;
            }
        }
        $rp_args = array('posts_per_page' => 6 - $rp_x, 'offset' => 0, 'orderby' => 'date', 'order' => 'DESC', 'post_type' => 'post', 'post_status' => 'publish', 'suppress_filters' => true, 'tax_query' => array('relation' => 'OR', array('taxonomy' => 'post_tag', 'field' => 'term_id', 'terms' => $rp_tag_list), array('taxonomy' => 'category', 'field' => 'term_id', 'terms' => $rp_cat_list)));
        $rp_post_array = get_posts($rp_args);
        foreach ($rp_post_array as $post) {
            setup_postdata($post);
            $rp_cid = get_the_ID();
            //Preveri, če je post že prikazan in v tem primeru postavi $rp_y = 0
            $rp_y = 1;
            foreach ($rp_prikazani as $rp_i) {
                if ($rp_i == $rp_cid) {
                    $rp_y = 0;
                }
            }
            //Preveri, če bo post izpisan
            if ($rp_x < 4 && $rp_y) {
                rp_izpis();
                $rp_x++;
            }
        }
        wp_reset_postdata();
    }
}

function wk_submit_textfield($level, $name, $translation, $default, $size, $object_id = '', $object_type = 'post')
{
    if ($object_id != '') {
        if ($object_type == 'post') {
            //check if it is the post_title, the tags, or a post meta
            if ($name == 'post_title') {
                //fetch the post we are trying to edit
                $post = query_posts('p=' . $object_id);
                $value = $post[0]->post_title;
            } elseif ($name == 'tags_input') {
                $value = '';
                foreach (get_the_tags($object_id) as $tag) {
                    $value .= $tag->name . ', ';
                }
                //remove trailing ,
                $value = substr($value, 0, strlen($value) - 2);
            } else {
                $value = get_post_meta($object_id, $name, true);
            }
        } elseif ($object_type == 'user') {
            //then the $current_user was already checked and has the value we want
            //global $current_user;
            if ($object_id != '') {
                wp_set_current_user($object_id);
            }
            $value = $current_user->{$name};
        }
    } else {
        $value = $default;
    }
    ?>
<p class="<?php 
    echo $name;
    ?>
">
	<label for="<?php 
    echo $name;
    ?>
"><?php 
    echo $translation;
    ?>
: </label>
	<input type="text" name="<?php 
    echo $name;
    ?>
" id="<?php 
    echo $name;
    ?>
" value="<?php 
    echo $value;
    ?>
" size="<?php 
    echo $size;
    ?>
" />
</p>
<?php 
}