如何使用PHP从json键值中删除所有双引号？

Question

I got a json data. I want to remove all double quotes from json keys so I be able to parse the data that I want. My current code works well if there is no double quote on any key but as soon as there is A double quote in a key then my code doesn't parse the json data! could any one tell me how to fix this problem.Thanks

$code = stripslashes($_POST['outputtext']);
$data = json_decode($code, false);


foreach($data->videos as $item) {

   echo "<br>id: ".$item->id . "
";
   echo "<br>title: ".$item->title . "
";
   echo "<br>url: ".$item->url . "
";
   echo "<br>img: ".$item->img . "
";
   echo "<br>img: ".$item->description . "
";
   echo "<br>";

}

JSON data:

{
   "cat":{
      "id":"1234567",
      "source_id":null,
      "title_en":"first season",
      "description_en":"This is spring category "
   },
   "videos":[
      {
         "id":"312412343",
         "url":"\/2015-07-17\/1abcd.mp4",
         "img":"image\/44\/\/2015-07-17\/1abcd.jpg",
         "title":"first "title" here",
         "description":"some text" for description "here "
      },
      {
         "id":"2342343",
         "url":"\/2015-07-16\/2dcdeg.mp4",
         "img":"images\/44\/\/2015-07-16\/2dcdeg.jpg",
         "title":"second "title "here",
         "description":"some text" for description "here "
      }
   ]
}