OpenCart 🇺🇦

$sql = "SELECT v.voucher_id, v.code, v.from_name, v.from_email, v.to_name, v.to_email, (SELECT vtd.name FROM " . DB_PREFIX . "voucher_theme_description vtd WHERE vtd.voucher_theme_id = v.voucher_theme_id AND vtd.language_id = '" . (int)$this->config->get('config_language_id') . "') AS theme, v.amount, v.status, v.date_added FROM " . DB_PREFIX . "voucher v";

$sort_data = array(
	'v.code',
	'v.from_name',
	'v.from_email',
	'v.to_name',
	'v.to_email',
	'v.theme',
	'v.amount',
	'v.status',
	'v.date_added'
);	

if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {
	$sql .= " ORDER BY " . $data['sort'];	
} else {
	$sql .= " ORDER BY v.date_added";	
}

if (isset($data['order']) && ($data['order'] == 'DESC')) {
	$sql .= " DESC";
} else {
	$sql .= " ASC";
}

if (isset($data['start']) || isset($data['limit'])) {
	if ($data['start'] < 0) {
		$data['start'] = 0;
	}			

	if ($data['limit'] < 1) {
		$data['limit'] = 20;
	}	

	$sql .= " LIMIT " . (int)$data['start'] . "," . (int)$data['limit'];
}		

$query = $this->db->query($sql);

return $query->rows;