如何在PHP中创建家庭循环

Question

我正在使用此https://codepen.io/VividD/pen/fIFJt建立家庭关系 我想首先得到父亲和母亲，然后是父亲的父亲和母亲，母亲的母亲和母亲，它将继续为每个父母，直到我达到它的结束。这种形式需要数据。

 function getData() {
return {  
    "name": "Clifford Shanks",
    "born": 1862,
    "died": 1906,
    "location": "Petersburg, VA",
    "parents": [
      {
        "name": "James Shanks",
        "born": 1831,
        "died": 1884,
        "location": "Petersburg, VA",
        "parents": [
          {
            "name": "Robert Shanks",
            "born": 1781,
            "died": 1871,
            "location": "Ireland/Petersburg, VA"
          },
          {
            "name": "Elizabeth Shanks",
            "born": 1795,
            "died": 1871,
            "location": "Ireland/Petersburg, VA"
          }
        ]
      },
      {
        "name": "Ann Emily Brown",
        "born": 1826,
        "died": 1866,
        "location": "Brunswick/Petersburg, VA",
        "parents": [
          {
            "name": "Henry Brown",
            "born": 1792,
            "died": 1845,
            "location": "Montgomery, NC"
          },
          {
            "name": "Sarah Houchins",
            "born": 1793,
            "died": 1882,
            "location": "Montgomery, NC"
          }
        ]
       }
       ]
       };
       };

我无法为它创建无限循环，如果有人可以提供帮助那将非常感谢。