php字符串操作,该怎么解决

$getstr="id=189,pc=0,pt=0,valide=1\r\nid=176,pc=0,pt=0,valide=1\r\nid=177,pc=0,pt=0,valide=1\r\n";

$getstr = "id=189,pc=0,pt=0,valide=1\r\nid=176,pc=0,pt=0,valide=1\r\nid=177,pc=0,pt=0,valide=1\r\n";



foreach(explode("\r\n", $getstr) as $row) {

  if($row) {

    parse_str(strtr($row, ',', '&'), $t);

    $res[] = $t;

  }

}



echo $res[0]['id'];