php如何解析json,jsonm_decode有时可以,有时不行

本帖最后由 cnaaa8 于 2013-06-21 09:55:14 编辑

网页编码GB2312(“注意这点，比较重要”),代码如下
当这里关键词为"玻璃移门"时，就无法解析json,但生成的url直接通过浏览器访问就有数据，如果关键词为"手机",就可以正常解析json，file_get_contents得到的数据貌似是utf-8的格式

listItem;}function getLocalIp(){//获得用户ip	if(isset($_SERVER['HTTP_CLIENT_IP'])){			 $ip=$_SERVER['HTTP_CLIENT_IP'];		}elseif(isset($_SERVER['HTTP_X_FORWARDED_FOR'])){			 $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];		}else{			 $ip=$_SERVER['REMOTE_ADDR'];		}	return $ip;}?>

回复讨论(解决方案)

关键词为"玻璃移门"时，echo $data; 是什么值

关键词为"玻璃移门"时，echo $data; 是什么值

echo 的代码如下，代码太多只能贴出部分，由于是手动截取的listItem节点内的格式可能不正确，或者直接访问（http://110.75.71.20/search_turn_page_iphone.htm?sort=&q=%E7%8E%BB%E7%92%83%E7%A7%BB%E9%97%A8&page=1&showMode=list），注意：我php文件编码是gb2312的,echo 出来的数据在浏览器中必须选utf-8才能正常显示，否则是乱码

{"result":"true","totalPage":"100","catmap":"","ppath":"","category":"移门","auctionTagFlag1":"","auctionTagFlag2":"","auctionTagFlag3":"","listItem":[ {"name":"特价吊门。阳台厨房客厅餐厅隔断推拉门，钛合金材质玻璃隔断移门" ,"img":"http://q.i03.wimg.taobao.com/bao/uploaded/i1/10777020696035707/T12ggQXXBXXXXXXXXX_!!0-item_pic.jpg_90x90.jpg","img2":"http://q.i03.wimg.taobao.com/bao/uploaded/i1/10777020696035707/T12ggQXXBXXXXXXXXX_!!0-item_pic.jpg","iswebp":"","url":"http://a.m.taobao.com/i12812086428.htm?rn=54mFXh1-tGoPo1JS2xg7rHCf0C-90rXM9O-Y7hC&sid=aa444833fda20421","previewUrl":"http://a.m.taobao.com/ajax/pre_view.do?itemId=12812086428&sid=aa444833fda20421","favoriteUrl":"http://fav.m.taobao.com/favorite/to_collection.htm?itemNumId=12812086428&sid=aa444833fda20421", "icon":["0" ], "price":"320.00","originalPrice":"320.00","freight":"0","area":"上海","act":"月售12","itemNumId":"12812086428","nick":"特价移门淋浴房阳台", "wwimUrl":"http://im.m.taobao.com/ww/ad_ww_dialog.htm?item_num_id=12812086428&to_user=zNi829LGw8XB3NSht7%2FR9Myo","category":"50022360","isMobileEcard":"false","auctionType":"b" } , {"name":"卫生间隔断门 阳台玻璃推拉门/拼格门 钢化玻璃移门 新店特惠" ,"img":"http://q.i04.wimg.taobao.com/bao/uploaded/i4/11427033313416399/T1aPluXCdcXXXXXXXX_!!0-item_pic.jpg_90x90.jpg","img2":"http://q.i04.wimg.taobao.com/bao/uploaded/i4/11427033313416399/T1aPluXCdcXXXXXXXX_!!0-item_pic.jpg","iswebp":"","url":"http://a.m.taobao.com/i17422447064.htm?rn=54mFXh1-tGoPo1JS2xg7rHCf0C-90rXM9O-Y7hC&sid=aa444833fda20421","previewUrl":"http://a.m.taobao.com/ajax/pre_view.do?itemId=17422447064&sid=aa444833fda20421","favoriteUrl":"http://fav.m.taobao.com/favorite/to_collection.htm?itemNumId=17422447064&sid=aa444833fda20421", "icon":["0" ], "price":"218.02","originalPrice":"298.00","freight":"10","area":"郑州","act":"月售10","itemNumId":"17422447064","nick":"逸品尚家居", "wwimUrl":"http://im.m.taobao.com/ww/ad_ww_dialog.htm?item_num_id=17422447064&to_user=0t3Gt8nQvNK%2B0w%3D%3D","category":"50022360","isMobileEcard":"false","auctionType":"b" }   }

你在json_decode之前将$data做下面的替换工作就可以了

$data = str_replace('\\', '\\\\', $data);

如果不知道为什么这样做，把$data输出的内容放到下面的网址下做个校验就知道了
Just Make JSON Easy!

$s = file_get_contents('http://110.75.71.20/search_turn_page_iphone.htm?sort=&q=%E7%8E%BB%E7%92%83%E7%A7%BB%E9%97%A8&page=1&showMode=list');$s = stripslashes($s);//去掉可能存在的转义$t = json_decode($s, true);//解码成数组array_walk_recursive($t, 'togbk');//因为你需要的是 gbk 编码的，所以要转一下码print_r($t);function togbk(&$item, $key) {  $item = iconv('utf-8', 'gbk', $item);}

Array
(
[result] => true
[totalPage] => 100
[catmap] =>
[ppath] =>
[category] => 移门
[auctionTagFlag1] =>
[auctionTagFlag2] =>
[auctionTagFlag3] =>
[listItem] => Array
(
[0] => Array
(
[name] => 特价吊门。阳台厨房客厅餐厅隔断推拉门，钛合金材质玻璃隔断移门
[img] => http://q.i03.wimg.taobao.com/bao/uploaded/i1/10777020696035707/T12ggQXXBXXXXXXXXX_!!0-item_pic.jpg_90x90.jpg
[img2] => http://q.i03.wimg.taobao.com/bao/uploaded/i1/10777020696035707/T12ggQXXBXXXXXXXXX_!!0-item_pic.jpg
[iswebp] =>
[url] => http://a.m.taobao.com/i12812086428.htm?rn=X3mFMh1-jGoPuafkFFhChWPExE-ER1xM9O-wi5D&sid=4d5bc9aee02ed3b0
[previewUrl] => http://a.m.taobao.com/ajax/pre_view.do?itemId=12812086428&sid=4d5bc9aee02ed3b0
[favoriteUrl] => http://fav.m.taobao.com/favorite/to_collection.htm?itemNumId=12812086428&sid=4d5bc9aee02ed3b0
[icon] => Array
(
[0] => 0
)

[price] => 320.00
[originalPrice] => 320.00
[freight] => 0
[area] => 上海
[act] => 月售12
[itemNumId] => 12812086428
[nick] => 特价移门淋浴房阳台
[wwimUrl] => http://im.m.taobao.com/ww/ad_ww_dialog.htm?item_num_id=12812086428&to_user=zNi829LGw8XB3NSht7%2FR9Myo
[category] => 50022360
[isMobileEcard] => false
[auctionType] => b
)

[1] => Array
(
[name] => 卫生间隔断门 阳台玻璃推拉门/拼格门 钢化玻璃移门 新店特惠
[img] => http://q.i04.wimg.taobao.com/bao/uploaded/i4/11427033313416399/T1aPluXCdcXXXXXXXX_!!0-item_pic.jpg_90x90.jpg
......

你难道不知道json不支持gbk编码么？虽然不会报错也不会出现乱码，但官方已经声明不支持gbk。所以就出现你说的这种情况了。

我来总结一番：
1.json不支持gbk编码；
2.array_walk_recursive($t, 'togbk');//因为你需要的是 gbk 编码的，所以要转一下码

php中json_decode();解析json数据，如果json里有中文数据，是解析不了的。

stripslashes($abc);//去掉可能存在的转义