求一个正则匹配

Question

{
"category":
  {"n":"国内","l":"http://news.163.com/domestic/"},{"n":"国际","l":"http://news.163.com/world/"},{"n":"社会","l":"http://news.163.com/shehui/"},{"n":"深度","l":"http://focus.news.163.com/"},{"n":"评论","l":"http://news.163.com/review/"},
"news":
{"c":0,"t":"教育部通报四川广元考场挂钟故障等高考考务事故","l":"http://news.163.com/12/1008/10/8D9MO54G0001124J.html","p":"2012-10-08 10:13:20"},{"c":0,"t":"媒体评钓鱼岛争端：人要比狗聪明 不被尾巴戏弄","l":"http://news.163.com/12/1008/10/8D9M08TC0001124J.html","p":"2012-10-08 10:00:18"},{"c":0,"t":"台湾“法务部”：陈水扁目前尚不符保外医治条件","l":"http://news.163.com/12/1008/09/8D9LG70F00014AEE.html","p":"2012-10-08 09:43:00"},
}只想匹配 红色字的部分，其他部分都舍弃掉。请问这段正则该如何编写？谢谢~！

Answer 1

你这个是json吧
$arr = json_decode($res);
print_r($arr);

Answer 2

当然不是json了，小了几个“[]”，
$str = <<<STR
{
"category":
  {"n":"国内","l":"http://news.163.com/domestic/"},{"n":"国际","l":"http://news.163.com/world/"},{"n":"社会","l":"http://news.163.com/shehui/"},{"n":"深度","l":"http://focus.news.163.com/"},{"n":"评论","l":"http://news.163.com/review/"},
"news":
{"c":0,"t":"教育部通报四川广元考场挂钟故障等高考考务事故","l":"http://news.163.com/12/1008/10/8D9MO54G0001124J.html","p":"2012-10-08 10:13:20"},{"c":0,"t":"媒体评钓鱼岛争端：人要比狗聪明 不被尾巴戏弄","l":"http://news.163.com/12/1008/10/8D9M08TC0001124J.html","p":"2012-10-08 10:00:18"},{"c":0,"t":"台湾“法务部”：陈水扁目前尚不符保外医治条件","l":"http://news.163.com/12/1008/09/8D9LG70F00014AEE.html","p":"2012-10-08 09:43:00"},
}
STR;$m = preg_split('#(category":|news":|},)#Us', $str);
foreach($m as $v) {
    if(false !== stripos($v, 'http:')) echo $v . '}<br/>';
}
/**
输出结果：
{"n":"国内","l":"http://news.163.com/domestic/"}
{"n":"国际","l":"http://news.163.com/world/"}
{"n":"社会","l":"http://news.163.com/shehui/"}
{"n":"深度","l":"http://focus.news.163.com/"}
{"n":"评论","l":"http://news.163.com/review/"}
{"c":0,"t":"教育部通报四川广元考场挂钟故障等高考考务事故","l":"http://news.163.com/12/1008/10/8D9MO54G0001124J.html","p":"2012-10-08 10:13:20"}
{"c":0,"t":"媒体评钓鱼岛争端：人要比狗聪明 不被尾巴戏弄","l":"http://news.163.com/12/1008/10/8D9M08TC0001124J.html","p":"2012-10-08 10:00:18"}
{"c":0,"t":"台湾“法务部”：陈水扁目前尚不符保外医治条件","l":"http://news.163.com/12/1008/09/8D9LG70F00014AEE.html","p":"2012-10-08 09:43:00"}
*/

Answer 3

$str='
{
"category":
  {"n":"国内","l":"http://news.163.com/domestic/"},{"n":"国际","l":"http://news.163.com/world/"},{"n":"社会","l":"http://news.163.com/shehui/"},{"n":"深度","l":"http://focus.news.163.com/"},{"n":"评论","l":"http://news.163.com/review/"},
"news":
{"c":0,"t":"教育部通报四川广元考场挂钟故障等高考考务事故","l":"http://news.163.com/12/1008/10/8D9MO54G0001124J.html","p":"2012-10-08 10:13:20"},{"c":0,"t":"媒体评钓鱼岛争端：人要比狗聪明 不被尾巴戏弄","l":"http://news.163.com/12/1008/10/8D9M08TC0001124J.html","p":"2012-10-08 10:00:18"},{"c":0,"t":"台湾“法务部”：陈水扁目前尚不符保外医治条件","l":"http://news.163.com/12/1008/09/8D9LG70F00014AEE.html","p":"2012-10-08 09:43:00"},
}';
preg_match_all("/\{(.+?),(.+?)\}/",$str,$out);
print_r($out);
Array
(
    [0] => Array
        (
            [0] => {"n":"国内","l":"http://news.163.com/domestic/"}
            [1] => {"n":"国际","l":"http://news.163.com/world/"}
            [2] => {"n":"社会","l":"http://news.163.com/shehui/"}
            [3] => {"n":"深度","l":"http://focus.news.163.com/"}
            [4] => {"n":"评论","l":"http://news.163.com/review/"}
            [5] => {"c":0,"t":"教育部通报四川广元考场挂钟故障等高考考务事故","l":"http://news.163.com/12/1008/10/8D9MO54G0001124J.html","p":"2012-10-08 10:13:20"}
            [6] => {"c":0,"t":"媒体评钓鱼岛争端：人要比狗聪明 不被尾巴戏弄","l":"http://news.163.com/12/1008/10/8D9M08TC0001124J.html","p":"2012-10-08 10:00:18"}
            [7] => {"c":0,"t":"台湾“法务部”：陈水扁目前尚不符保外医治条件","l":"http://news.163.com/12/1008/09/8D9LG70F00014AEE.html","p":"2012-10-08 09:43:00"}
        )    [1] => Array
        (
            [0] => "n":"国内"
            [1] => "n":"国际"
            [2] => "n":"社会"
            [3] => "n":"深度"
            [4] => "n":"评论"
            [5] => "c":0
            [6] => "c":0
            [7] => "c":0
        )    [2] => Array
        (
            [0] => "l":"http://news.163.com/domestic/"
            [1] => "l":"http://news.163.com/world/"
            [2] => "l":"http://news.163.com/shehui/"
            [3] => "l":"http://focus.news.163.com/"
            [4] => "l":"http://news.163.com/review/"
            [5] => "t":"教育部通报四川广元考场挂钟故障等高考考务事故","l":"http://news.163.com/12/1008/10/8D9MO54G0001124J.html","p":"2012-10-08 10:13:20"
            [6] => "t":"媒体评钓鱼岛争端：人要比狗聪明 不被尾巴戏弄","l":"http://news.163.com/12/1008/10/8D9M08TC0001124J.html","p":"2012-10-08 10:00:18"
            [7] => "t":"台湾“法务部”：陈水扁目前尚不符保外医治条件","l":"http://news.163.com/12/1008/09/8D9LG70F00014AEE.html","p":"2012-10-08 09:43:00"
        ))