tagcloud.php

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<?php
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;
    $max = 0;

    foreach ($vars['tagcloud'] as $tag) {
        if ($tag->total > $max) {
            $max = $tag->total;
        }
    }

    $cloud = '';
    foreach ($vars['tagcloud'] as $tag) {
        $tag->tag = htmlspecialchars($tag->tag, ENT_QUOTES, 'UTF-8', false);

        if ($cloud != '') {
            $cloud .= ', ';
        }
        // protecting against division by zero warnings
        $size = round((log($tag->total) / log($max + .0001)) * 100) + 30;
        if ($size < 100) {
            $size = 100;
        }
        $url = "search?q=". urlencode($tag->tag) . "&search_type=tags$type$subtype";

        $cloud .= elgg_view('output/url', array(
            'text' => $tag->tag,
            'href' => $url,
            'style' => "font-size: $size%;",
            'title' => "$tag->tag ($tag->total)",
            'rel' => 'tag'
        ));
    }

    $cloud .= elgg_view('tagcloud/extend');

    echo "<div class=\"elgg-tagcloud\">$cloud</div>";
}