Plugin - Category Tag Cloud

[Eric Barnes]

v4 Plugin - Category Tag Cloud

This smarty plugin will create a tag cloud of your categories.

Requirements

Minimum version 4.0.0

Instructions

Save the code below as function.categories_cloud.php and place it in the includes/classes/smarty/plugins/ folder.

After you have saved the file you can use this code in the template file:

{categories_cloud}

You will also need to add another style to your css file. Something like this:

#tagcloud { margin: 0 0 20px; }
#tagcloud a { margin: 0 5px 0 0; color: #25771F; }
#tagcloud a:hover { background: #E7FEE5; color: #007898; }

Parameters

Below is a list of parameters you can use when calling this plugin. Please note these are optional.

min(integer)

The minimum size for the category with the least listings.

max(integer)

The maximum size for the category with the most listings.

pixel(string)

What size you want. Default is "em". Could be % or px.

Download

PHP Code:

<?php
function smarty_function_categories_cloud($params, &$smarty)
{
    global $db,$arr_childs, $Categories;
    
    $min = '.9';
    $max = '5';
    $pixel = 'em';
    $output = '<div id="tagcloud">'. "\n";
    
    foreach ($params as $_key=>$_value) 
    {
        switch ($_key) 
        {
            case 'max':
            case 'min':
            case 'pixel':
                $$_key = $_value;
                break;
        }
    }
    
    // First get the total//
    $sSQL="SELECT COUNT(*) AS total FROM ".PREFIX."listings WHERE expiration > NOW() AND display = 'Y'";
    $result=$db->query($sSQL);
    $rs=$result->fetch();
    $total_listings=$rs['total'];
    
    //now loop the categories and get the percentage. 
     $sSQL = "SELECT id,parent_id,name,slug,allowads,cLink FROM ".PREFIX."categories WHERE display<>'N' ORDER BY cORDER DESC, name ASC";
    $result=$db->query($sSQL);
    if($result->size() > 0)
     {
        $i=0;
        while ($rs=$result->fetch())
        {
            $name=safeStripSlashes($rs['name']);
            $name=htmlspecialchars($name);
            //add url for category link
            if($rs['cLink']<>"")
            {
                $start_link='<a href="'.$rs['cLink'].'">';
            }
            else
            {
                $slug = ( empty($rs['slug']) ) ? $rs['id']: $rs['slug'];
                $start_link='<a href="category.php?cat='.$slug.'">';
            }
            
            $sSQL2="SELECT COUNT(*) AS size FROM ".PREFIX."listings WHERE section = ". $rs['id'] ." AND expiration > NOW() AND (display='Y' OR display='S')";
            $result2=$db->query($sSQL2);
            $row = $result2->fetch();
            $cat_total=$row['size'];
            $size = $cat_total / $total_listings;
            $size = $size * $max;
            if($size < $min)
            {
                $size = $min;
            }
            if($size > $max)
            {
                $size = $max;
            }
            //output
            $output.='<span style="font-size: '.$size . $pixel.'">'.$start_link . $name .'</a></span>'. "\n";
        }
        $result->freeResult($result);
        $output .= '</div>'. "\n";
        return $output;
     }
     else
     {
         return false;
     }
}
?>

[Maffo]

Call me an idiot but what is a tag cloud?

[Eric Barnes]

Here is an example of one: http://ajaxrain.com/tagcloud.php

I have seen them on lots of blogs and such. So I thought it would be something someone might want.

[Maffo]

Thanks Eric, yet another geek name to add to my vocabulary

[CHRD]

this tag cloud is listing all 420 of my cats

[Eric Barnes]

You can just add a limit to the query:

FROM ".PREFIX."categories WHERE display<>'N' ORDER BY cORDER DESC, name ASC LIMIT 20";

[gppromano]

I use version 3.1.5 how can I make it compatible?

Thanks

[manchag]

Hello everyone,
i'm having some problems installing this script. I followed all the steps, however all the tags look the same size:
Enlistalo - Anuncios Clasificados en tu Localidad

I was also wondering if it's possible to customize this script and display cities instead of categories?


Manuel

[nagrap2]

Eric,

How can I modify this script so that it only displays the Sub Categories for the Category I am viewing?

I would want to do something similar to the following, where the user clicks on a top level category and then I display the Cloud of subcategories:

School of Everything | Learn drawing

Thanks in advance...