如何從TXT文件中提取Open Graph信息？

Question

我有一個包含一些像這樣的Facebook的Open Graph的信息的TXT文件：

{ 
    "data": [ 
     { 
     "name": "Avatar", 
     "category": "Movie", 
     "id": "82771544063", 
     "created_time": "2012-04-13T21:16:56+0000" 
     }, 
     { 
     "name": "HappyDance", 
     "category": "Movie", 
     "id": "243564344063", 
     "created_time": "2012-04-13T21:16:56+0000" 
     } 
    ], 
    "paging": { 
     "next": "https://graph.facebook.com/me/likes?format=json&limit=5000&offset=5000&__after_id=5546653546361" 
    } 
} 

在PHP中，我希望從顯示

"id": "XXXXXXXXXXXX", 

輸出應該行提取所有身份證號碼像這樣：

I like 8277564344063 
I like 243564344063 

我開始以下，但我得到了一個錯誤：

<?php 
$file_handle = fopen("raw.txt", "rb"); 
ob_start(); 

$text = file_get_contents('raw.txt'); 
$decode = json_decode($text); 

print_r($decode); 

$new_content = ob_get_clean(); 
file_put_contents("likes.txt", $new_content); 

fclose($file_handle); 
?> 

錯誤是我的輸出是空的！我究竟做錯了什麼？

請幫忙？

Answer 1

您沒有有效的JSON。

JSON 對象下面這行是有效的JSON。我在「data」數組中的最後一個關聯數組之後刪除了逗號。數組末尾不應該有逗號。

 { 
      "data": [ 
       { 
       "name": "Avatar", 
       "category": "Movie", 
       "id": "82771544063", 
       "created_time": "2012-04-13T21:16:56+0000" 
       }, 
       { 
       "name": "HappyDance", 
       "category": "Movie", 
       "id": "243564344063", 
       "created_time": "2012-04-13T21:16:56+0000" 
       } 
      ], 
      "paging": { 
       "next": "https://graph.facebook.com/me/likes? format=json&limit=5000&offset=5000&__after_id=5546653546361" 
      } 
     } 


Parse error on line 14: 
... },   ], "paging": { 
---------------------^ 
Expecting 'STRING', 'NUMBER', 'NULL', 'TRUE', 'FALSE', '{', '[' 

當我從無效的JSON中刪除了逗號。我能夠得到你想要的結果。

  <?php 
       $json_object = file_get_contents('fb.json'); 
       if(!$json_object) { 
             echo "oops, cant read the file"; 
            } 

       // remap json_object 
       $json_object = json_decode($json_object,true); 

        foreach($json_object['data'] as $item) { 
          $items[] = "I like" . ' ' . $item['id']; 

         /* If you want to just echo " I like xyz" etc 
         * use echo "I like" . $item['id']; 
         */ 
         } 

        $list = implode(',',$items); 

        echo $list; 
      ?>