OpenCart 🇺🇦

$sql = "SELECT *, CONCAT(a.firstname, ' ', a.lastname) AS name, (SELECT SUM(at.amount) FROM " . DB_PREFIX . "affiliate_transaction at WHERE at.affiliate_id = a.affiliate_id GROUP BY at.affiliate_id) AS balance FROM " . DB_PREFIX . "affiliate a";

$implode = array();

if (!empty($data['filter_name'])) {
	$implode[] = "CONCAT(a.firstname, ' ', a.lastname) LIKE '" . $this->db->escape($data['filter_name']) . "%'";
}

if (!empty($data['filter_email'])) {
	$implode[] = "LCASE(a.email) = '" . $this->db->escape(utf8_strtolower($data['filter_email'])) . "'";
}

if (!empty($data['filter_code'])) {
	$implode[] = "a.code = '" . $this->db->escape($data['filter_code']) . "'";
}

if (isset($data['filter_status']) && !is_null($data['filter_status'])) {
	$implode[] = "a.status = '" . (int)$data['filter_status'] . "'";
}	

if (isset($data['filter_approved']) && !is_null($data['filter_approved'])) {
	$implode[] = "a.approved = '" . (int)$data['filter_approved'] . "'";
}		

if (!empty($data['filter_date_added'])) {
	$implode[] = "DATE(a.date_added) = DATE('" . $this->db->escape($data['filter_date_added']) . "')";
}

if ($implode) {
	$sql .= " WHERE " . implode(" AND ", $implode);
}

$sort_data = array(
	'name',
	'a.email',
	'a.code',
	'a.status',
	'a.approved',
	'a.date_added'
);	

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

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;