php - 配列/オブジェクトから値を取得する方法

Question

アップロード関数を呼び出すと、変数が返されます。私が行うvar_dump($x)と、次のように表示されます。

{"files":[{"name":"1004046_469695273124093_104592888_n_1_28860.jpg","size":0,"type":"image\/jpeg","error":"abort","delete_url":"http:\/\/www.xxx.com\/upload\/uploader\/server\/php\/?file=1004046_469695273124093_104592888_n_1_28860.jpg","delete_type":"DELETE"}]}array(1) {
["files"]=>
    array(1) {
     [0]=> object(stdClass)#24 (6) {
     ["name"]=> string(47) "1004046_469695273124093_104592888_n_1_28860.jpg"
     ["size"]=> int(0)
     ["type"]=> string(10) "image/jpeg"
     ["error"]=> string(5) "abort"
     ["delete_url"]=> string(104) "http://www.xxx.com/upload/uploader/server/php/?file=1004046_469695273124093_104592888_n_1_28860.jpg"
     ["delete_type"]=> string(6) "DELETE"
    }
 }
}

試しvar_dump(json_decode($x))てみましたが、結果はNULLです。

私の質問は、これから値の名前を取得するにはどうすればよいですか???

これらの2つを試しました：

echo $x->files[0]->name;
echo " ********************** ";
echo $x['files'][0]->name;
echo " ********************** ";

結果は

{"files":[{"name":"1004046_469695273124093_104592888_n_1_14299.jpg","size":78289,"type":"image\/jpeg","url":"http:\/\/www.xxx.com\/upload\/uploader\/server\/php\/files\/1004046_469695273124093_104592888_n_1_14299.jpg","thumbnail_url":"http:\/\/www.xxx.com\/upload\/uploader\/server\/php\/files\/thumbnail\/1004046_469695273124093_104592888_n_1_14299.jpg","delete_url":"http:\/\/www.xxx.com\/upload\/uploader\/server\/php\/?file=1004046_469695273124093_104592888_n_1_14299.jpg","delete_type":"DELETE"}]}{"files":[{"name":"1004046_469695273124093_104592888_n_1_12920.jpg","size":0,"type":"image\/jpeg","error":"abort","delete_url":"http:\/\/www.xxx.com\/upload\/uploader\/server\/php\/?file=1004046_469695273124093_104592888_n_1_12920.jpg","delete_type":"DELETE"}]}
********************** 
{"files":[{"name":"1004046_469695273124093_104592888_n_1_15697.jpg","size":0,"type":"image\/jpeg","error":"abort","delete_url":"http:\/\/www.xxx.com\/upload\/uploader\/server\/php\/?file=1004046_469695273124093_104592888_n_1_15697.jpg","delete_type":"DELETE"}]}1004046_469695273124093_104592888_n_1_15697.jpg
********************** 

Answer 1

やってみました：

$name_val = $x->files[0]->name;