PHP: filter specific pattern out of string

Question

My raw output of socket_recvfrom is:

ID IP PING IDENTIFIERNUMBER USERNAME

0 127.0.0.1:1234 0 ID123456789 Moritz

1 127.0.0.1:1234 46 ID123456789 August Jones

2 127.0.0.1:1234 46 ID123456789 Miller

It is a single string that contains all of this informations in once and just contains whitespaces between the informations. All keys can be longer or shorter.

My problem:

When I preg_split("/\s+/") it, then I get a good array with useable data, but when the username contains spaces it creates a second index for this. Not good, all data that comes after this just get destroyed.

I sort the array like this: ID, USERNAME, PING, IDENTIFIERNUMBER, IP

Example by the sorting output with username with one space in it:

ID: 0, USERNAME: Moritz, PING: 0, IDENTIFIERNUMBER: ID123456789, IP: 127.0.0.1:1234

ID: 1, USERNAME: August, PING: Jones, IDENTIFIERNUMBER: 46, IP: ID123456789

ID: 127.0.0.1:1234, USERNAME: 2, PING: Miller, IDENTIFIERNUMBER: 46, IP: ID123456789

How do I get the information correctly out of the string?

Just forgot to say:

The string begins with: --------------------------------- in a not countable order. So it can be like 10 characters or 12. The string ends with:

 (8 users in total)

The regex methode looks good. I only need to filter out the other characters.

--------------------------------- 0 127.0.0.1:1234 0 ID123456789(OK) Moritz 1 127.0.0.1:1234 46 ID123456789(OK) August Jones 2 127.0.0.1:1234 46 ID123456789(OK) Miller (7 users in total)

Last problem: https://www.regex101.com/r/wP8cW1/1

Can you update your example strings to show how the --------------------------------- and (8 users in total) are displayed? — chris85
– chris85, Commented Jun 25, 2015 at 19:35

splash58 · Accepted Answer · 2015-06-25 20:09:19Z

1

You may use regex

(?P<ID>\d+)\s+(?P<IP>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d+)\s(?P<PINGR>\d+)\s(?P<IDENTIFIERNUMBER>ID\d+)(\(OK\))?(?P<USERNAME>(\s[A-z]\w+)+)

MATCH 1
ID  [0-1]   `0`
IP  [2-16]  `127.0.0.1:1234`
PINGR   [17-18] `0`
IDENTIFIERNUMBER    [19-30] `ID123456789`
USERNAME    [31-37] `Moritz`

MATCH 2
ID  [39-40] `1`
IP  [41-55] `127.0.0.1:1234`
PINGR   [56-58] `46`
IDENTIFIERNUMBER    [59-70] `ID123456789`
USERNAME    [71-83] `August Jones`

MATCH 3
ID  [85-86] `2`
IP  [87-101]    `127.0.0.1:1234`
PINGR   [102-104]   `46`
IDENTIFIERNUMBER    [105-116]   `ID123456789`
USERNAME    [117-123]   `Miller`

Demo and explanation

edited Jun 25, 2015 at 20:09

answered Jun 25, 2015 at 19:11

splash58

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8 Comments

gDayZ Over a year ago

Looks awesome, I just edited my post. Maybe you can fix that problem too for me.

splash58 Over a year ago

You can split by NL and use regex for all lines in foreach loop, for example. On special lines matches will not be occured

chris85 Over a year ago

2 possible issues, If a username has a number it won't match (looks more like these are "user's names" than "usernames" though). This will allow invalid IPs. \D can also be used in place of [^\d]. I hadn't seen the named capture groups before.

splash58 Over a year ago

I agree with \D. But i don't know how diff name which is more than one word and has digit :( May be set that 1st letter is not digit

gDayZ Over a year ago

Ok, I got it finally. Like chris said, the username also has digits. How do I filter this?

|

marianis · Accepted Answer · 2015-06-25 19:08:57Z

0

Do you alredy try explode the string by new lines \n ??

test this code.

$str = '0 127.0.0.1:1234 0 ID123456789 Moritz
      1 127.0.0.1:1234 46 ID123456789 August Jones
      2 127.0.0.1:1234 46 ID123456789 Miller';

$lines = array_filter(explode("\n", $str)); 

    foreach ($lines as $value) {
        $t[] = preg_split("/\s+/", trim($value));
    }

Now in the var $t you have a usefull data.

answered Jun 25, 2015 at 19:08

marianis

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1 Comment

gDayZ Over a year ago

Nope, the username just get split into pieces if it contains a whitespaces

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