引号之间的文本的正则表达式是什么？

Question

Ok, I have tried looking at other answers, but couldn't get mine solved. So here is the code:

{"chg":"-0.71","vol":"40700","time":"11.08.2011 12:29:09","high":"1.417","low":"1.360","last":"1.400","pcl":"1.410","turnover":"56,560.25"}

I need to get every second value in the quotes (as the "name" values are constant). I actually worked out that I need to get text between :" and " but i can't manage to write a regex for that.

EDIT: I'm doing preg_match_all in php. And its between :" and " , not " and " as someone else edited.

Answer 1

Why on earth would you attempt to parse JSON with regular expressions? PHP already parses JSON properly , with built-in functionality.

Code:

<?php
$input = '{"chg":"-0.71","vol":"40700","time":"11.08.2011 12:29:09","high":"1.417","low":"1.360","last":"1.400","pcl":"1.410","turnover":"56,560.25"}';
print_r(json_decode($input, true));
?>

Output:

Array
(
    [chg] => -0.71
    [vol] => 40700
    [time] => 11.08.2011 12:29:09
    [high] => 1.417
    [low] => 1.360
    [last] => 1.400
    [pcl] => 1.410
    [turnover] => 56,560.25
)

Live demo.

Answer 2

You may need to escape characters or add a forward slash to the front or back depending on your language. But it's basically:

:"([^"].*?)"

or

/:"([^"].*?)"/

I've test this in groovy as below and it works.

import java.util.regex.*;

String test='{"chg":"-0.71","vol":"40700","time":"11.08.2011 12:29:09","high":"1.417","low":"1.360","last":"1.400","pcl":"1.410","turnover":"56,560.25"}'

  // Create a pattern to match breaks
  Pattern p = Pattern.compile(':"([^"]*)"');
  // Split input with the pattern
  // Run some matches
  Matcher m = p.matcher(test);
  while (m.find())
      System.out.println("Found comment: "+m.group().replace('"','').replace(":",""));

Output was:

Found comment: -0.71
Found comment: 40700
Found comment: 11.08.2011 12:29:09
Found comment: 1.417
Found comment: 1.360
Found comment: 1.400
Found comment: 1.410
Found comment: 56,560.25

PHP Example

<?php
$subject = '{"chg":"-0.71","vol":"40700","time":"11.08.2011 12:29:09","high":"1.417","low":"1.360","last":"1.400","pcl":"1.410","turnover":"56,560.25"}';
$pattern = '/(?<=:")[^"]*/';
preg_match_all($pattern, $subject, $matches, PREG_OFFSET_CAPTURE);
print_r($matches);
?>

Output is:

Array ( [0] => Array ( [0] => Array ( [0] => -0.71 [1] => 8 ) [1] => Array ( [0] => 40700 [1] => 22 ) [2] => Array ( [0] => 11.08.2011 12:29:09 [1] => 37 ) [3] => Array ( [0] => 1.417 [1] => 66 ) [4] => Array ( [0] => 1.360 [1] => 80 ) [5] => Array ( [0] => 1.400 [1] => 95 ) [6] => Array ( [0] => 1.410 [1] => 109 ) [7] => Array ( [0] => 56,560.25 [1] => 128 ) ) )