取JSON數據

Question

的Json代碼是：

{"apiVersion":"2.1","data":{"id":"bLBSoC_2IY8","uploaded":"2014-04- 29T04:11:56.000Z","updated":"2014-12-04T16:08:10.000Z","uploader":"latenight","category":"Comedy","title":"Lip Sync Battle with Emma Stone","description":"Jimmy and Emma Stone square off in a lip sync battle and Emma shows she's not afraid of lightning fast lyrics.\n\nSubscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN\n\nWatch The Tonight Show Starring Jimmy Fallon Weeknights 11:35/10:35c\nGet more Jimmy Fallon: \nFollow Jimmy: http://Twitter.com/JimmyFallon\nLike Jimmy: https://Facebook.com/JimmyFallon\n\nGet more The Tonight Show Starring Jimmy Fallon: \nFollow The Tonight Show: http://Twitter.com/FallonTonight\nLike The Tonight Show: https://Facebook.com/FallonTonight\nThe Tonight Show Tumblr: http://fallontonight.tumblr.com/\n\nGet more NBC: \nNBC YouTube: http://bit.ly/1dM1qBH\nLike NBC: http://Facebook.com/NBC\nFollow NBC: http://Twitter.com/NBC\nNBC Tumblr: http://nbctv.tumblr.com/\nNBC Google+: https://plus.google.com/+NBC/posts\n\nThe Tonight Show Starring Jimmy Fallon features hilarious highlights from the show including: comedy sketches, music parodies, celebrity interviews, ridiculous games, and, of course, Jimmy's Thank You Notes and hashtags! You'll also find behind the scenes videos and other great web exclusives.\n\nLip Sync Battle with Emma Stone\nhttp://www.youtube.com/fallontonight","thumbnail":{"sqDefault":"http://i.ytimg.com/vi/bLBSoC_2IY8/default.jpg","hqDefault":"http://i.ytimg.com/vi/bLBSoC_2IY8/hqdefault.jpg"},"player":{"default":"http://www.youtube.com/watch?v=bLBSoC_2IY8&feature=youtube_gdata_player","mobile":"http://m.youtube.com/details?v=bLBSoC_2IY8"},"content":{"5":"http://www.youtube.com/v/bLBSoC_2IY8?version=3&f=videos&d=AXyDziqd4CCanEZDalXV_C8O88HsQjpE1a8d1GxQnGDm&app=youtube_gdata","1":"rtsp://r7---sn-o097zuek.c.youtube.com/CkULENy73wIaPAmPIfYvoFKwbBMYDSANFEgGUgZ2aWRlb3NyIQF8g84qneAgmpxGQ2pV1fwvDvPB7EI6RNWvHdRsUJxg5gw=/0/0/0/video.3gp","6":"rtsp://r7---sn-o097zuek.c.youtube.com/CkULENy73wIaPAmPIfYvoFKwbBMYESARFEgGUgZ2aWRlb3NyIQF8g84qneAgmpxGQ2pV1fwvDvPB7EI6RNWvHdRsUJxg5gw=/0/0/0/video.3gp"},"duration":446,"aspectRatio":"widescreen","rating":4.9287434,"likeCount":"279315","ratingCount":284381,"viewCount":36983500,"favoriteCount":0,"commentCount":12125,"accessControl":{"comment":"allowed","commentVote":"allowed","videoRespond":"moderated","rate":"allowed","embed":"allowed","list":"allowed","autoPlay":"allowed","syndicate":"allowed"}}}

我試圖獲取在PHP陣列環路乳寧細數據，但但變量沒有值：

foreach ($result->data as $item) { 
$title = is_null($subject) ? htmlentities($item->title) : htmlentities($item->video->title); 
$id = is_null($subject) ? $item->id : $item->video->id; 
$timestamp = is_null($subject) ? strtotime($item->uploaded) : strtotime($item->video->uploaded); 
$uploaded = date('M j, Y', $timestamp); 
$watch = is_null($subject) ? $item->player->default : $item->video->player->default; 
$image = is_null($subject) ? $item->thumbnail->sqDefault : $item->video->thumbnail->sqDefault; 
$description = is_null($subject) ? $item->description : $item->video->description; 
$viewCount = is_null($subject) ? $item->viewCount : $item->video->viewCount; 
$duration = is_null($subject) ? gmdate('H:i:s', intval($item->duration)) : gmdate('H:i:s',  intval($item->video->duration)); 
echo $id 
echo $title 
echo $description 
?> 

最新問題？

Answer 1

至於@Marc_B試圖解釋，你需要循環，如鍵/值對：

foreach($result->data as $key=>$value) { 

，並尋找$key是你有興趣

Here is a working example

。

但是，如果您的數據總是包含一個結果，則可以跳過該循環並且只是：

Answer 2

您使用了錯誤的OBJ訪問路徑：

{"apiVersion":"2.1","data":{"id":"bLBSoC_2IY8","uploaded":"2014-04-etc.. 

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

是要給你「blBSoC_2IY8」，「2014-04-等等......」爲$項目，這僅僅是字符串。 $item->whatever將失敗，因爲$ item是一個字符串，而不是一個對象。