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$this->db->query("UPDATE `" . DB_PREFIX . "custom_field` SET type = '" . $this->db->escape($data['type']) . "', value = '" . $this->db->escape($data['value']) . "', required = '" . (int)$data['required'] . "', location = '" . $this->db->escape($data['location']) . "', position = '" . $this->db->escape($data['position']) . "', sort_order = '" . (int)$data['sort_order'] . "' WHERE custom_field_id = '" . (int)$custom_field_id . "'");

$this->db->query("DELETE FROM " . DB_PREFIX . "custom_field_description WHERE custom_field_id = '" . (int)$custom_field_id . "'");

foreach ($data['custom_field_description'] as $language_id => $value) {
	$this->db->query("INSERT INTO " . DB_PREFIX . "custom_field_description SET custom_field_id = '" . (int)$custom_field_id . "', language_id = '" . (int)$language_id . "', name = '" . $this->db->escape($value['name']) . "'");
}

$this->db->query("DELETE FROM " . DB_PREFIX . "custom_field_value WHERE custom_field_id = '" . (int)$custom_field_id . "'");
$this->db->query("DELETE FROM " . DB_PREFIX . "custom_field_value_description WHERE custom_field_id = '" . (int)$custom_field_id . "'");

if (isset($data['custom_field_value'])) {
	foreach ($data['custom_field_value'] as $custom_field_value) {
		if ($custom_field_value['custom_field_value_id']) {
			$this->db->query("INSERT INTO " . DB_PREFIX . "custom_field_value SET custom_field_value_id = '" . (int)$custom_field_value['custom_field_value_id'] . "', custom_field_id = '" . (int)$custom_field_id . "', sort_order = '" . (int)$custom_field_value['sort_order'] . "'");
		} else {
			$this->db->query("INSERT INTO " . DB_PREFIX . "custom_field_value SET custom_field_id = '" . (int)$custom_field_id . "', sort_order = '" . (int)$custom_field_value['sort_order'] . "'");
		}

		$custom_field_value_id = $this->db->getLastId();

		foreach ($custom_field_value['custom_field_value_description'] as $language_id => $custom_field_value_description) {
			$this->db->query("INSERT INTO " . DB_PREFIX . "custom_field_value_description SET custom_field_value_id = '" . (int)$custom_field_value_id . "', language_id = '" . (int)$language_id . "', custom_field_id = '" . (int)$custom_field_id . "', name = '" . $this->db->escape($custom_field_value_description['name']) . "'");
		}
	}
}