数据库text字段存值用回车分隔

//查询
$sql = "SELECT attr_values FROM ecs_attribute WHERE attr_id=197";
$param_sel_sms = array();
$r_references = PdbcTemplate::query($sql,$param_sel_sms,PDO::FETCH_ASSOC,1);
$a = explode("\r\n",$r_references['attr_values']);
echo '<pre/>';
print_r($a);
print_r($r_references);
var_dump($r_references);
exit;

//增加
$a = "自测13-11\r\n自测13-21\r\n自测13-31";
$sql='UPDATE ecs_attribute SET attr_values="'.$a.'"WHERE attr_id=?';
echo $sql;
$param_sel_sms = array(197);
$r_references = PdbcTemplate::execute($sql,$param_sel_sms);
echo '<pre/>';
print_r($r_references);
exit;