PHP - JSON API ส่งข้อมูลตอบกลับมาแล้วจะเก็บข้อมูลไว้อย่างไรครับ

{
    "domain": "domain.com",
    "whois_url": "http://domain.com/domain.com/whois",
    "register_url": "http://domain.com/domain.com/register",
    "tld": {
      "domain": "nr",
      "domain_idna": "nr",
      "wikipedia_url": "http://wikipedia.org/wiki/.nr",
      "iana_url": "http://www.iana.org/domains/root/db/nr.html"
    },
    "registrars": [{
      "registrar": "cenpac.net.nr",
      "name": "CenpacNET",
      "register_url": "http://domain.com/domain.com/register/cenpac.net.nr"
    }],
    "host": "",
    "path": "",
    "www_url": "http://domain.com/domain.com/www",
    "query": "domain.com",
    "subdomain": "domain.com",
    "domain_idna": "domain.com",
    "availability": "taken"
  }