请教一个简单的正则提取问题

[cnqncom]

$re = '/"body":"(1+)",/';
$str = '{"returnCode":"0","resultCode":"0","sign":"19333CD7F9710A104DA5D815709697D2","outChannelNo":"2017120100401000000017","status":"02","mchId":"000000010000000002","channel":"wxPubQR","body":"收单支付","outTradeNo":"20171201150337579753","amount":0.01,"transTime":"20171201150337"}';
preg_match_all($re, $str, $matches);

不仅需要提取 body,还要把 transTime 也提取出来。规则怎么写？

[cnqncom]

$re = '/"Title":"([^"]+)",/';

[Telegram]

标准 json，你为啥要用正则

[cnqncom]

@Telegram 只想提取里面的这两个值

[shifangjumie]

json_decode 之后取不出来么？

[zhuzhuyule]

一次匹配：
```
reg1=/,\s*"body":"([^"]*)"[\w\W]*?,\s*"transTime":"([^"]*)"/
```

循环匹配：
```
reg2=/,\s*"(body|transTime)":"([^"]*)"/g
```

[symeonchen]

简单版本:
```
"body":"[^"]+"
```
和
```
"transTime":"[\w]+"
```
正则不见得快多少，用 Json 解析更方便

[MuscleOf2016]

推荐一个网站，妈妈再也不用怕我写正则了。
http://www.txt2re.com/index-javascript.php3?s={%22returnCode%22:%220%22,%22resultCode%22:%220%22,%22sign%22:%2219333CD7F9710A104DA5D815709697D2%22,%22outChannelNo%22:%222017120100401000000017%22,%22status%22:%2202%22,%22mchId%22:%22000000010000000002%22,%22channel%22:%22wxPubQR%22,%22body%22:%22%26%2325910;%26%2321333;%26%2325903;%26%2320184;%22,%22outTradeNo%22:%2220171201150337579753%22,%22amount%22:0.01,%22transTime%22:%2220171201150337%22}&6

[VgV]

直接用 json_decode 就可以了呗，像调用数组那样。
你不会写正则也许还会匹配错，但你直接用 json_decode 函数解出来再用数组调用就准确多了，
除非你提供的字符串不是 json
$arr = json_decode(字符串,true);
print_r($arr);

[br00k]

正常路不走，非要走野路子。😂

[mingyun]

@MuscleOf2016 666

[fox0001]

既然是标准 JSON 字符串，还是解析 JSON 方便，正则表达式提取要考虑格式变换（例如双引号变成单引号，空格增多或减少）的情况

[toxicant]

对啊... json_decode 1 分钟能找到的东西 用正则还得去 v2 问。

[scriptB0y]

用 json 库解析未必比 re 慢啊

[ericgui]

理解不了为什么不用 json 解析。实在理解不了。

[crane2018]

美特斯邦威：不走寻常路😆