simplexml_load_file失敗array(13) {
  [0]=>
  string(30) "HTTP/1.1 301 Moved Permanently"
  [1]=>
  string(18) "Server: awselb/2.0"
  [2]=>
  string(35) "Date: Wed, 24 Apr 2024 00:38:20 GMT"
  [3]=>
  string(23) "Content-Type: text/html"
  [4]=>
  string(19) "Content-Length: 134"
  [5]=>
  string(17) "Connection: close"
  [6]=>
  string(66) "Location: https://rss.exblog.jp:443/rss/exblog/fukeinews/index.xml"
  [7]=>
  string(22) "HTTP/1.1 404 Not Found"
  [8]=>
  string(35) "Date: Wed, 24 Apr 2024 00:38:20 GMT"
  [9]=>
  string(38) "Content-Type: text/html; charset=UTF-8"
  [10]=>
  string(17) "Connection: close"
  [11]=>
  string(13) "Server: nginx"
  [12]=>
  string(24) "X-Powered-By: PHP/7.1.33"
}
ステータスコードは301です。