快速正则表达式grep / perl / php

Question

I have this text:

2015-03-11 10:15 - anonymous logged in to [127.0.0.1] on account 1DEYKqtPtAEt5hDfiAlz7SdFEGUSPguxGu using key uembzzQdgFHq9k0UJfEi4Dnkvc7n3N5tWVNRQmKfZpeJPnyzKVzKSVVsvLGL6bY 0.2379845 BTC were transferred to address 1cRa5v0Nxu9ABkkzlTv4dzsyRf0hOkg27N using key 1zM9nBd1PNu1FF7qKr1t9Y4m0TawPa3ZQJ1LrlvtViCiB2aFjgn8BIHWG2VHjJvV

and I'm trying to extract the pseudo BTC account and the matching key. The text is not regular like the apache logs, so you could have a really long line with 5 or 10 addresses or a single line with the same info. Now how do I match the pseudo BTC account and it's matching key, from the "logged in" and "transferred" part, even if there are a many occurrences in one line?

I have tried this:

function get_string_between($string, $start, $end){
$string = " ".$string;
$ini = strpos($string,$start);
if ($ini == 0) return "";
$ini += strlen($start);
$len = strpos($string,$end,$ini) - $ini;
return substr($string,$ini,$len);
}
$parsed = get_string_between($fullstring, "account", "using");

which gets me the address but not the matching key. I would like to parse the text either using grep, perl or php. whatever works easier. I have been trying with php since I'm at least familiar with the language.

any ideas? I appreciate all your help

Answer 1

You need to use capturing group based regex in preg_match_all function.

$str = "2015-03-11 10:15 - anonymous logged in to [127.0.0.1] on account 1DEYKqtPtAEt5hDfiAlz7SdFEGUSPguxGu using key uembzzQdgFHq9k0UJfEi4Dnkvc7n3N5tWVNRQmKfZpeJPnyzKVzKSVVsvLGL6bY 0.2379845 BTC were transferred to address 1cRa5v0Nxu9ABkkzlTv4dzsyRf0hOkg27N using key 1zM9nBd1PNu1FF7qKr1t9Y4m0TawPa3ZQJ1LrlvtViCiB2aFjgn8BIHWG2VHjJvV";
preg_match_all('~(?:account|address)\s+(\S+)\s+using\s+key\s+(\S+)~m', $str, $match);
print_r($match[1]);
print_r($match[2]);

Output:

Array
(
    [0] => 1DEYKqtPtAEt5hDfiAlz7SdFEGUSPguxGu
    [1] => 1cRa5v0Nxu9ABkkzlTv4dzsyRf0hOkg27N
)
Array
(
    [0] => uembzzQdgFHq9k0UJfEi4Dnkvc7n3N5tWVNRQmKfZpeJPnyzKVzKSVVsvLGL6bY
    [1] => 1zM9nBd1PNu1FF7qKr1t9Y4m0TawPa3ZQJ1LrlvtViCiB2aFjgn8BIHWG2VHjJvV
)