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<?php
/**
* Elgg tagcloud
* Displays a tagcloud
*
* @package Elgg
* @subpackage Core
* @author Curverider Ltd
* @link http://elgg.org/
*
* @uses $vars['tagcloud'] An array of stdClass objects with two elements: 'tag' (the text of the tag) and 'total' (the number of elements with this tag)
* @uses $vars['value'] Sames as tagcloud
* @uses $vars['type'] Entity type
* @uses $vars['subtype'] Entity subtype
*/
if (!empty($vars['subtype'])) {
$subtype = "&entity_subtype=" . urlencode($vars['subtype']);
} else {
$subtype = "";
}
if (!empty($vars['type'])) {
$type = "&entity_type=" . urlencode($vars['type']);
} else {
$type = "";
}
if (empty($vars['tagcloud']) && !empty($vars['value'])) {
$vars['tagcloud'] = $vars['value'];
}
if (!empty($vars['tagcloud']) && is_array($vars['tagcloud'])) {
$counter = 0;
$cloud = "";
$max = 0;
foreach($vars['tagcloud'] as $tag) {
if ($tag->total > $max) {
$max = $tag->total;
}
}
foreach($vars['tagcloud'] as $tag) {
if (!empty($cloud)) {
$cloud .= ", ";
}
// protecting against division by zero warnings
$size = round((log($tag->total) / log($max + .0001)) * 100) + 30;
if ($size < 60) {
$size = 60;
}
$url = $vars['url'] . "pg/search/?q=". urlencode($tag->tag) . "&search_type=tags{$type}{$subtype}";
$cloud .= "<a href=\"{$url}\" style=\"font-size: {$size}%\" title=\"".addslashes($tag->tag)." ({$tag->total})\" style=\"text-decoration:none;\">" . htmlentities($tag->tag, ENT_QUOTES, 'UTF-8') . "</a>";
}
echo $cloud;
}
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