bebeboutik/modules/ant_configurations/cron_reorder_braderie.php

<?php
if(isset($_SERVER['REMOTE_ADDR'])) {
    exit;
}

$_SERVER['HTTP_HOST'] = 'www.bebeboutik.com';
$_SERVER['SERVER_NAME'] = 'www.bebeboutik.com';
$_SERVER['HTTP_PORT'] = 80;
$_SERVER['REMOTE_ADDR'] = '127.0.0.1';

include dirname(__FILE__).'/../../config/config.inc.php';

$categories = array();
foreach(Db::getInstance()->ExecuteS('
    SELECT pc.`id_category`
    FROM `'._DB_PREFIX_.'privatesale_category` pc
    LEFT JOIN `'._DB_PREFIX_.'privatesale` p ON (p.id_sale = pc.id_sale)
    WHERE p.`braderie` = 1
') as $c){
    $categories[] = $c['id_category'];
}
foreach ($categories as $key => $id_category) {
    $products = Db::getInstance()->ExecuteS('
        SELECT cp.`id_product`
        FROM `'._DB_PREFIX_.'category_product` cp
        RIGHT JOIN `'._DB_PREFIX_.'product` p ON (p.id_product=cp.id_product)
        LEFT JOIN `'._DB_PREFIX_.'product_lang` pl ON (pl.id_product=p.id_product AND pl.`id_lang` = 1)
        WHERE cp.id_category ='.(int)$id_category.' AND p.quantity != 0
        ORDER BY cp.`position`
    ');
    if($products){
        foreach ($products as $key => $product) {
            Db::getInstance()->Execute('
                UPDATE `'._DB_PREFIX_.'category_product`
                SET `position` = '. (int)($key) .'
                WHERE `id_product` = '.(int)($product['id_product']).'
                AND `id_category`='.(int)$id_category
            );
        }
    }

    $products_zero = Db::getInstance()->ExecuteS('
        SELECT cp.`id_product`
        FROM `'._DB_PREFIX_.'category_product` cp
        RIGHT JOIN `'._DB_PREFIX_.'product` p ON (p.id_product=cp.id_product)
        LEFT JOIN `'._DB_PREFIX_.'product_lang` pl ON (pl.id_product=p.id_product AND pl.`id_lang` = 1)
        WHERE cp.id_category ='.(int)$id_category.' AND p.quantity = 0
        ORDER BY cp.`position`
    ');
    if($products_zero){
        $position = count($products);
        foreach ($products_zero as $key => $product) {
            Db::getInstance()->Execute('
                UPDATE `'._DB_PREFIX_.'category_product`
                SET `position` = '. (int)($position) .'
                WHERE `id_product` = '.(int)($product['id_product']).'
                AND `id_category`='.(int)$id_category
            );
            $position++;
        }
    }
}