how to extract (very simple), II approach

[AndyPSV]

all the same: http://www.phpfreaks.com/forums/index.php?topic=349404.0

 

<?php
$variable = 'answer_comment';
preg_match("/(?<=$variable)[^A-Za-z]+/sm", $subject, $match);

(with code that worked)

 

 

but instead of only numbers, I've got now:

 

(code above only selects to first appearance of: "#", then it stops)

123321#c31221

12#c15

21321#c2153

 

 

How to extract such data with the usage of this modified preg_match?

 

Thank you.

[joe92]

Will the only non digits always be '#c'? Or could it be '#g' or even '$Ylpqw'?

[AndyPSV]

both

 

they could also be extended to "#c211:9494" (for additional params), in the future

 

thank you.

[joe92]

Hmm, not entirely sure on what you need now

 

However, something like this might work. Again, untested:

<?php
$variable = 'answer_comment';
preg_match("/(?<=$variable)(\d+#[a-zA-Z]\d+(:\d+)?)+?(?![a-zA-Z]{2})/sm", $subject, $match);

 

That will look for:

- Something that begins with the variable.

- Is constantly looking ahead to make sure that: Two letters don't match (indicates a word)

- The following will happen between one and infinity times

  - Starts with a digit.

      - There is at least one and infinity digits.

  - Followed by a hash symbol

  - Followed by one letter, upper or lower case

  - Followed by between one and infinity digits

  - Between one and zero times the following will happen

    - Followed by a colon

    - Followed by between one and infinity digits

 

 

If you have another variation of a regex question, before asking it, please go to http://www.regular-expressions.info/tutorial.html and read up on regex. If, if, you still cannot understand how to get what you need, then ask the question.

 

Hope this helps,

Joe

[AndyPSV]

It doesn't wants to work.

 

<?php

$CID = 'question_comment';
$s = 'answer_comment
21221#c321321321
213231321213
21332132121121212112
122121434
12

question_comment
1#c8
5093320#c21
3215533

';

preg_match("/(?<=$CID)(\d+#[a-zA-Z]\d+(:\d+)?)+?(?![a-zA-Z]{2})/sm",$s,$arr); /*$arr = trim($arr[0]); $arr = explode(NL,$arr);*/ var_export($arr); die;


?>

 

I think, I would use explode(), however: it's not so elegant as the preg_match().

 

 

--------------------------------- (didn't thought that before)

 

 

<?php

$CID = 'question_comment';
$s = 'answer_comment
21221#c321321321
213231321213
21332132121121212112
122121434
12

question_comment
1#c8
5093320#c21
3215533

';

$arr1 = explode($CID,$s);
$arr = explode("\r\n\r\n",$arr1[1]);

#preg_match("/(?<=$CID)(\d+#[a-zA-Z]\d+(:\d+)?)+?(?![a-zA-Z]{2})/sm",$s,$arr); /*$arr = trim($arr[0]); $arr = explode(NL,$arr);*/

var_export($arr); die;


?>

 

SOLVED, thank you.