从JSON PHP中删除值

我是PHP新手，正在开发wordpress JSON api。我想删除JSON数组中的Key:value对。请帮忙

{  
 "status":"ok",
 "post":{  
  "id":23,
  "type":"post",
  "slug":"head-ache",
  "url":"http:\/\/xyz.com\/maruthuvam\/2015\/06\/17\/head-ache\/",
  "status":"publish",
  "title":"Head Ache",
  "title_plain":"Head Ache",
  "content":"<p>content<\/p>\n<p>&nbsp;<\/p>\n",
  "excerpt":"<p>content &nbsp;<\/p>\n",
  "date":"2015-06-17 19:35:47",
  "modified":"2015-06-18 07:35:39",
  "categories":[  
     {  
        "id":1,
        "slug":"head",
        "title":"Head",
        "description":"http:\/\/xyz.com\/maruthuvam\/wp-content\/uploads\/2015\/06\/universa_-male_head_3d_model_01.jpg",
        "parent":0,
        "post_count":3
     }
  ],
  "tags":[  

  ],
  "author":{  
     "id":1,
     "slug":"admin",
     "name":"admin",
     "first_name":"",
     "last_name":"",
     "nickname":"admin",
     "url":"",
     "description":""
  },
  "comments":[  

  ],
  "attachments":[  

  ],
  "comment_count":0,
  "comment_status":"closed",
  "custom_fields":{  

  }
  },
  "next_url":"http:\/\/xyz.com\/maruthuvam\/2015\/06\/17\/head-  lice\/"
  }

---

}

您需要将其解析为普通数组，然后删除所需内容并将其编码回json：

// parsing json
$arr = decode_json($yourJson);

// removing the value
unset($arr['post']['slug']);

// and back to json
$editedJson = json_encode($arr);

---

只需将其转换为PHP数组：

$jsonArray = json_decode($jsonString);

取下钥匙

unset($jsonArray['post']['slug']);

并转换回：

$newJson = json_encode($jsonArray);

$a=json\u解码（$data，true）；
未结算（$a['post']['slug']）；
未设置（$a['next_url']）；
$count=count（$a['post']['categories']）；
对于（$i=0；$i<$count；$i++）{
未结算（$a['post']['categories'][$i]['post_count']）；
}
echo json_编码（$a）；

将json转换为数组，删除键，然后再转换回json。可能重复此操作：此答案缺少教育性解释。

$newJson = json_encode($jsonArray);

 $a= json_decode($data,true);
        unset($a['post']['slug']);
        unset($a['next_url']);

        $count= count($a['post']['categories']);
        for($i=0 ; $i < $count ; $i++){
                 unset($a['post']['categories'][$i]['post_count']);
        }

         echo json_encode($a);