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Quickly count subcategories to speed up site loading time


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I'm working on a site with a large category database > 3000 categories. I have successfully loaded my category list into phpmyadmin (tables in Myisam). However when attempting to load the site (localhost), the site times out.

The site times out after 30seconds and gets stuck on a subcategory count in php. Here's the line of code it gets stuck at while loading:

function GetSubCatCount($catid){
global $db, $the_cats;

$count = 0;

foreach($the_cats as $cat){
        if($cat->category_parent == $catid && $cat->category__auto_id <> 0 && $cat->category_lang == $dblang)
            $count = $count + 1;

return $count;

This counting method seems rather slow. How can I speed up the count of the subcategories in php or have Mysql send the subcategory count values?



Thanks and Regards!


Database: pligg
Table: pligg_categories


Table details:


|category__auto_id |category_lang |category_id |category_parent |category_name |category_safe_name |rgt |lft |category_enabled |category_order |category_desc |category_keywords |category_author_level |category_author_group |category_votes |category_karma


Software version: 5.5.25a - MySQL Community Server (GPL)

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