[SOLVED] How can I add a button on the front end of the product page to download all product images?

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public function downloadcatalog(){
$this->load->model('catalog/product'); 
        $product_info = $this->model_catalog_product->getProduct($this->request->get['product_id']);        
        $results = $this->model_catalog_product->getProductImages($this->request->get['product_id']);        
            foreach ($results as $result) {
                $files[] = 'image/'.$result['image'];
            }         
        $zip = new ZipArchive();        
        # create a temp file & open it
        $tmp_file = tempnam('.', '');
        $zip->open($tmp_file, ZipArchive::CREATE);        
        # loop through each file
        foreach ($files as $file) {
            # download file
            $download_file = file_get_contents($file);
            #add it to the zip
            $zip->addFromString(basename($file), $download_file);
        }
        # close zip
        $zip->close();
        $file_name = $product_info['name'].'.zip';
        # send the file to the browser as a download
        /*header('Content-disposition: attachment; filename="'.$product_info['name'].'"');
        header('Content-type: application/zip');*/
        header("HTTP/1.1 200 OK");
        header("Pragma: public");
        header("Expires: 0");
        header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
        header("Cache-Control: public");
        header("Content-Description: File Transfer");
        header("Content-type: application/zip");
        header('Content-Disposition: attachment; filename="'.$file_name.'"');
        header("Content-Transfer-Encoding: binary");
        header('Content-Length: ' . filesize($tmp_file));

        //$zip->close();
        //readfile($zipname);
                readfile($tmp_file);
                unlink($tmp_file);
            }

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$zip->addFile($file));

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$zip->addFile($file, basename($file));

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public function downloadcatalog(){
$this->load->model('catalog/product'); 
        $product_info = $this->model_catalog_product->getProduct((int)$this->request->get['product_id']);        
        $results = $this->model_catalog_product->getProductImages((int)$this->request->get['product_id']);        

			foreach ($results as $result) {
				$files[] ='image/'.$result['image'];
			}

			$files[] ='image/'.$product_info['image'];
	
		$zip = new ZipArchive;

		$zip_name = $product_info['name'].'.zip';
 
		if ($zip->open($zip_name, ZIPARCHIVE::CREATE | ZIPARCHIVE::OVERWRITE) === TRUE){

			foreach ($files as $file) {
			$zip->addFile($file);
			}
			$zip->close();
	        	} 
		if (file_exists($zip_name)) {
			header('Content-Description: File Transfer');
			header('Content-Type: application/octet-stream');
			header('Content-Disposition: attachment; filename="' . basename($zip_name) . '"');
			header('Expires: 0');
			header('Cache-Control: must-revalidate');
			header('Pragma: public');
			header('Content-Length: ' . filesize($zip_name));
			readfile($zip_name);
			unlink($zip_name);
			exit;
		}
	}

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$this->request->get['product_id']

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(int)$this->request->get['product_id']

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public function getProductImages($product_id) {
		$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "product_image WHERE product_id = '" . (int)$product_id . "' ORDER BY sort_order ASC");

		return $query->rows;
	}

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$this->load->model('journal3/product');

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$results = $this->model_catalog_product->getProductImages((int)$this->request->get['product_id']);

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$results = $this->model_journal3_product->getProductImages($this->request->get['product_id']);

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unlink($zip_name);