Controller file

<?php

class ControllerProductAllproduct extends Controller
{
    public function index()
    {
        $this->load->language('product/allproduct');

        $this->load->model('catalog/allproduct');

        $this->load->model('catalog/product');

        $this->load->model('tool/image');
        $this->document->setTitle($this->language->get('page_title'));
        $this->document->setDescription($this->language->get('meta_description'));
        $this->document->setKeywords($this->language->get('meta_keyword'));

        $data['heading_title'] = $this->language->get('heading_title');
        if (isset($this->request->get['filter'])) {
            $filter = $this->request->get['filter'];
        } else {
            $filter = '';
        }

        if (isset($this->request->get['sort'])) {
            $sort = $this->request->get['sort'];
        } else {
            $sort = 'p.sort_order';
        }

        if (isset($this->request->get['order'])) {
            $order = $this->request->get['order'];
        } else {
            $order = 'ASC';
        }


        if (isset($this->request->get['page'])) {
            $page = $this->request->get['page'];
        } else {
            $page = 1;
        }

        if (isset($this->request->get['limit'])) {
            $limit = (int)$this->request->get['limit'];
        } else {
            $limit = $this->config->get($this->config->get('config_theme') . '_product_limit');
        }

        $data['breadcrumbs'] = array();

        $data['breadcrumbs'][] = array(
            'text' => $this->language->get('text_home'),
            'href' => $this->url->link('common/home')
        );


        $allproduct_info = $this->model_catalog_allproduct->getAllProduct();

        if ($allproduct_info) {

            $data['text_refine'] = $this->language->get('text_refine');
            $data['text_empty'] = $this->language->get('text_empty');
            $data['text_quantity'] = $this->language->get('text_quantity');
            $data['text_manufacturer'] = $this->language->get('text_manufacturer');
            $data['text_model'] = $this->language->get('text_model');
            $data['text_price'] = $this->language->get('text_price');
            $data['text_tax'] = $this->language->get('text_tax');
            $data['text_points'] = $this->language->get('text_points');
            $data['text_compare'] = sprintf($this->language->get('text_compare'), (isset($this->session->data['compare']) ? count($this->session->data['compare']) : 0));
            $data['text_sort'] = $this->language->get('text_sort');
            $data['text_limit'] = $this->language->get('text_limit');

            $data['button_cart'] = $this->language->get('button_cart');
            $data['button_wishlist'] = $this->language->get('button_wishlist');
            $data['button_compare'] = $this->language->get('button_compare');
            $data['button_continue'] = $this->language->get('button_continue');
            $data['button_list'] = $this->language->get('button_list');
            $data['button_grid'] = $this->language->get('button_grid');

// Set the last AllProduct breadcrumb
            $data['breadcrumbs'][] = array(
                'text' => $this->language->get('heading_title'),
                'href' => $this->url->link('product/allproduct')
            );

            $url = '';

            $data['products'] = array();

            $filter_data = array(
                'filter_filter' => $filter,
                'sort' => $sort,
                'order' => $order,
                'start' => ($page - 1) * $limit,
                'limit' => $limit
            );

            $product_total = $this->model_catalog_product->getTotalProducts($filter_data);

            $results = $this->model_catalog_product->getProducts($filter_data);

            foreach ($results as $result) {
                if ($result['image']) {
                    $image = $this->model_tool_image->resize($result['image'], $this->config->get($this->config->get('config_theme') . '_image_product_width'), $this->config->get($this->config->get('config_theme') . '_image_product_height'));
                } else {
                    $image = $this->model_tool_image->resize('placeholder.png', $this->config->get($this->config->get('config_theme') . '_image_product_width'), $this->config->get($this->config->get('config_theme') . '_image_product_height'));
                }

                if ($this->customer->isLogged() || !$this->config->get('config_customer_price')) {
                    $price = $this->currency->format($this->tax->calculate($result['price'], $result['tax_class_id'], $this->config->get('config_tax')), $this->session->data['currency']);
                } else {
                    $price = false;
                }

                if ((float)$result['special']) {
                    $special = $this->currency->format($this->tax->calculate($result['special'], $result['tax_class_id'], $this->config->get('config_tax')), $this->session->data['currency']);
                } else {
                    $special = false;
                }

                if ($this->config->get('config_tax')) {
                    $tax = $this->currency->format((float)$result['special'] ? $result['special'] : $result['price'], $this->session->data['currency']);
                } else {
                    $tax = false;
                }

                if ($this->config->get('config_review_status')) {
                    $rating = (int)$result['rating'];
                } else {
                    $rating = false;
                }

                $data['products'][] = array(
                    'product_id' => $result['product_id'],
                    'thumb' => $image,
                    'name' => $result['name'],
                    'description' => utf8_substr(strip_tags(html_entity_decode($result['description'], ENT_QUOTES, 'UTF-8')), 0, $this->config->get($this->config->get('config_theme') . '_product_description_length')) . '..',
                    'price' => $price,
                    'special' => $special,
                    'tax' => $tax,
                    'minimum' => $result['minimum'] > 0 ? $result['minimum'] : 1,
                    'rating' => $result['rating'],
                    'href' => $this->url->link('product/product', '&product_id=' . $result['product_id'] . $url)
                );
            }


            $url = '';

            if (isset($this->request->get['filter'])) {
                $url .= '&filter=' . $this->request->get['filter'];
            }

            if (isset($this->request->get['limit'])) {
                $url .= '&limit=' . $this->request->get['limit'];
            }

            $data['sorts'] = array();

            $data['sorts'][] = array(
                'text' => $this->language->get('text_default'),
                'value' => 'p.sort_order-ASC',
                'href' => $this->url->link('product/allproduct', '&sort=p.sort_order&order=ASC' . $url)
            );

            $data['sorts'][] = array(
                'text' => $this->language->get('text_name_asc'),
                'value' => 'pd.name-ASC',
                'href' => $this->url->link('product/allproduct', '&sort=pd.name&order=ASC' . $url)
            );

            $data['sorts'][] = array(
                'text' => $this->language->get('text_name_desc'),
                'value' => 'pd.name-DESC',
                'href' => $this->url->link('product/allproduct', '&sort=pd.name&order=DESC' . $url)
            );

            $data['sorts'][] = array(
                'text' => $this->language->get('text_price_asc'),
                'value' => 'p.price-ASC',
                'href' => $this->url->link('product/allproduct', '&sort=p.price&order=ASC' . $url)
            );

            $data['sorts'][] = array(
                'text' => $this->language->get('text_price_desc'),
                'value' => 'p.price-DESC',
                'href' => $this->url->link('product/allproduct', '&sort=p.price&order=DESC' . $url)
            );

            if ($this->config->get('config_review_status')) {
                $data['sorts'][] = array(
                    'text' => $this->language->get('text_rating_desc'),
                    'value' => 'rating-DESC',
                    'href' => $this->url->link('product/allproduct', '&sort=rating&order=DESC' . $url)
                );

                $data['sorts'][] = array(
                    'text' => $this->language->get('text_rating_asc'),
                    'value' => 'rating-ASC',
                    'href' => $this->url->link('product/allproduct', '&sort=rating&order=ASC' . $url)
                );
            }

            $data['sorts'][] = array(
                'text' => $this->language->get('text_model_asc'),
                'value' => 'p.model-ASC',
                'href' => $this->url->link('product/allproduct', '&sort=p.model&order=ASC' . $url)
            );

            $data['sorts'][] = array(
                'text' => $this->language->get('text_model_desc'),
                'value' => 'p.model-DESC',
                'href' => $this->url->link('product/allproduct', '&sort=p.model&order=DESC' . $url)
            );

            $url = '';

            if (isset($this->request->get['filter'])) {
                $url .= '&filter=' . $this->request->get['filter'];
            }

            if (isset($this->request->get['sort'])) {
                $url .= '&sort=' . $this->request->get['sort'];
            }

            if (isset($this->request->get['order'])) {
                $url .= '&order=' . $this->request->get['order'];
            }

            $data['limits'] = array();

            $limits = array_unique(array($this->config->get($this->config->get('config_theme') . '_product_limit'), 25, 50, 75, 100));

            sort($limits);

            foreach ($limits as $value) {
                $data['limits'][] = array(
                    'text' => $value,
                    'value' => $value,
                    'href' => $this->url->link('product/allproduct', $url . '&limit=' . $value)
                );
            }

            $url = '';

            if (isset($this->request->get['filter'])) {
                $url .= '&filter=' . $this->request->get['filter'];
            }

            if (isset($this->request->get['sort'])) {
                $url .= '&sort=' . $this->request->get['sort'];
            }

            if (isset($this->request->get['order'])) {
                $url .= '&order=' . $this->request->get['order'];
            }

            if (isset($this->request->get['limit'])) {
                $url .= '&limit=' . $this->request->get['limit'];
            }


            $pagination = new Pagination();
            $pagination->total = $product_total;
            $pagination->page = $page;
            $pagination->limit = $limit;
            $pagination->url = $this->url->link('product/allproduct', $url . '&page={page}');

            $data['pagination'] = $pagination->render();

            $data['results'] = sprintf($this->language->get('text_pagination'), ($product_total) ? (($page - 1) * $limit) + 1 : 0, ((($page - 1) * $limit) > ($product_total - $limit)) ? $product_total : ((($page - 1) * $limit) + $limit), $product_total, ceil($product_total / $limit));

// http://googlewebmastercentral.blogspot.com/2011/09/pagination-with-relnext-and-relprev.html
            if ($page == 1) {
                $this->document->addLink($this->url->link('product/allproduct', '', true), 'canonical');
            } elseif ($page == 2) {
                $this->document->addLink($this->url->link('product/allproduct', '', true), 'prev');
            } else {
                $this->document->addLink($this->url->link('product/allproduct', '&page=' . ($page - 1), true), 'prev');
            }

            if ($limit && ceil($product_total / $limit) > $page) {
                $this->document->addLink($this->url->link('product/allproduct', '&page=' . ($page + 1), true), 'next');
            }

            $data['sort'] = $sort;
            $data['order'] = $order;
            $data['limit'] = $limit;

            $data['continue'] = $this->url->link('common/home');

            $data['column_left'] = $this->load->controller('common/column_left');
            $data['column_right'] = $this->load->controller('common/column_right');
            $data['content_top'] = $this->load->controller('common/content_top');
            $data['content_bottom'] = $this->load->controller('common/content_bottom');
            $data['footer'] = $this->load->controller('common/footer');
            $data['header'] = $this->load->controller('common/header');

            $this->response->setOutput($this->load->view('product/allproduct', $data));
        } else {
            $url = '';

            if (isset($this->request->get['filter'])) {
                $url .= '&filter=' . $this->request->get['filter'];
            }

            if (isset($this->request->get['sort'])) {
                $url .= '&sort=' . $this->request->get['sort'];
            }

            if (isset($this->request->get['order'])) {
                $url .= '&order=' . $this->request->get['order'];
            }

            if (isset($this->request->get['page'])) {
                $url .= '&page=' . $this->request->get['page'];
            }

            if (isset($this->request->get['limit'])) {
                $url .= '&limit=' . $this->request->get['limit'];
            }

            $data['breadcrumbs'][] = array(
                'text' => $this->language->get('text_error'),
                'href' => $this->url->link('product/allproduct', $url)
            );

            $this->document->setTitle($this->language->get('text_error'));

            $data['heading_title'] = $this->language->get('text_error');

            $data['text_error'] = $this->language->get('text_error');

            $data['button_continue'] = $this->language->get('button_continue');

            $data['continue'] = $this->url->link('common/home');

            $this->response->addHeader($this->request->server['SERVER_PROTOCOL'] . ' 404 Not Found');

            $data['column_left'] = $this->load->controller('common/column_left');
            $data['column_right'] = $this->load->controller('common/column_right');
            $data['content_top'] = $this->load->controller('common/content_top');
            $data['content_bottom'] = $this->load->controller('common/content_bottom');
            $data['footer'] = $this->load->controller('common/footer');
            $data['header'] = $this->load->controller('common/header');

            $this->response->setOutput($this->load->view('error/not_found', $data));
        }
    }
}