Re: parsing print_r() output with preg_match_all()

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From	Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups	comp.lang.php
Subject	Re: parsing print_r() output with preg_match_all()
Date	Tue, 12 Jan 2016 00:49:02 +0100
Organization	PointedEars Software (PES)
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Arno Welzel wrote:

> R.Wieser schrieb am 2016-01-06 um 20:50:
>>> It would be a lot simpler if you could switch to using
>>> serialize and unserialize.  Do you need to use print_r
>>> for some other reason?
>> 
>> I'm using it to store the array-of-arrays into a file in human-readable
>> format.  I intend to parse this file using another program, posibly alter
>> some info and write it back.
>> 
>> And thats the point where I wanted to use that regex to read the
>> structure back in.
>> 
>> Now you mention it, I've heard from serializing and unserializing, but
>> was/am assuming that its not really ment to be read/understood by humans.
>> 
>> But what's the problem with using that preg_match_all() ?
> 
> It's prone to errors to build a parser on your own and there are already
> working and tested(!) solutions.

You have avoided the answer to the question.  As I indicated, the problem 
with preg_match_all() is that it is unsuitable to the task.  Regular 
expressions are not suited to parse bracket languages, which are not 
regular.  PCRE has recursion, but that is limited.  And with 
preg_match_all() you would have to use alternation where the first match, 
not the longest one, would win.

$ php -r 'preg_match_all("/foo|foobar/", "foobar", $matches); 
print_r($matches);'
Array
(
    [0] => Array
        (
            [0] => foo
        )

)

-- 
PointedEars
Zend Certified PHP Engineer 
<http://www.zend.com/en/yellow-pages/ZEND024953> | Twitter: @PointedEars2
Please do not cc me. / Bitte keine Kopien per E-Mail.

Thread

parsing print_r() output with preg_match_all()  "R.Wieser" <address@not.available> - 2016-01-06 17:18 +0100
  Re: parsing print_r() output with preg_match_all() Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-06 19:28 +0000
    Re: parsing print_r() output with preg_match_all() "R.Wieser" <address@not.available> - 2016-01-06 20:50 +0100
      Re: parsing print_r() output with preg_match_all() Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-06 21:12 +0000
        Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-06 16:20 -0500
          Re: parsing print_r() output with preg_match_all() Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-07 02:23 +0000
            Re: parsing print_r() output with preg_match_all() Matthew Carter <m@ahungry.com> - 2016-01-06 21:48 -0500
              Re: parsing print_r() output with preg_match_all() Matthew Carter <m@ahungry.com> - 2016-01-06 21:52 -0500
                Re: parsing print_r() output with preg_match_all() "R.Wieser" <address@not.available> - 2016-01-07 10:20 +0100
                Re: parsing print_r() output with preg_match_all() Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-07 10:56 +0000
                Re: parsing print_r() output with preg_match_all() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-07 12:55 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-07 08:36 -0500
                Re: parsing print_r() output with preg_match_all() Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-07 13:58 +0000
                Re: parsing print_r() output with preg_match_all() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-07 15:33 +0100
                Re: parsing print_r() output with preg_match_all() Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-07 15:31 +0000
                Re: parsing print_r() output with preg_match_all() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-07 18:23 +0100
            Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-06 22:50 -0500
            Re: parsing print_r() output with preg_match_all() "R.Wieser" <address@not.available> - 2016-01-07 10:10 +0100
          Re: parsing print_r() output with preg_match_all() "R.Wieser" <address@not.available> - 2016-01-07 10:03 +0100
            Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-07 08:38 -0500
              Re: parsing print_r() output with preg_match_all() Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-07 14:05 +0000
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-07 13:42 -0500
                Re: parsing print_r() output with preg_match_all() Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-07 20:24 +0000
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-07 15:27 -0500
        Re: parsing print_r() output with preg_match_all() "R.Wieser" <address@not.available> - 2016-01-07 09:51 +0100
          Re: parsing print_r() output with preg_match_all() Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-07 11:18 +0000
            Re: parsing print_r() output with preg_match_all() "R.Wieser" <address@not.available> - 2016-01-07 14:00 +0100
              Re: parsing print_r() output with preg_match_all() Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-07 14:00 +0000
              Re: parsing print_r() output with preg_match_all() "R.Wieser" <address@not.available> - 2016-01-07 16:19 +0100
      Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-11 09:11 +0100
        Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-11 08:04 -0500
          Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-11 23:48 +0100
            Re: parsing print_r() output with preg_match_all() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-12 00:41 +0100
              Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-11 20:53 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-12 05:40 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-12 09:12 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-12 21:43 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-12 16:12 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-12 22:28 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-12 16:35 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-13 06:39 +0100
                Re: parsing print_r() output with preg_match_all() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-13 08:26 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-13 08:10 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-13 14:49 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-13 10:08 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-13 18:50 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-13 15:06 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-13 23:11 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-13 17:18 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-13 23:27 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-13 19:17 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-14 01:30 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-13 20:52 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-14 08:13 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-14 09:18 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-14 20:07 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-14 16:06 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-14 22:41 +0100
                Re: parsing print_r() output with preg_match_all() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-14 22:35 +0100
                Re: parsing print_r() output with preg_match_all() Ian Collins <ian-news@hotmail.com> - 2016-01-14 10:24 +1300
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-13 17:20 -0500
                Re: parsing print_r() output with preg_match_all() Ian Collins <ian-news@hotmail.com> - 2016-01-14 12:14 +1300
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-13 19:18 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-14 08:34 +0100
                Re: parsing print_r() output with preg_match_all() Anders Wegge Keller <wegge@geostat.dk> - 2016-01-14 09:20 +0100
                Re: parsing print_r() output with preg_match_all() Ian Collins <ian-news@hotmail.com> - 2016-01-14 21:56 +1300
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-14 16:08 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-14 22:55 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-14 16:59 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-14 23:09 +0100
                Re: parsing print_r() output with preg_match_all() Ian Collins <ian-news@hotmail.com> - 2016-01-15 11:17 +1300
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-14 19:15 -0500
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-14 19:14 -0500
            Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-11 20:50 -0500
              Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-12 05:42 +0100
                Re: parsing print_r() output with preg_match_all() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-12 08:41 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-12 09:13 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-12 21:44 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-12 16:13 -0500
                Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-12 22:29 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-12 16:33 -0500
        Re: parsing print_r() output with preg_match_all() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-12 00:49 +0100
          Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-11 20:54 -0500
  Re: parsing print_r() output with preg_match_all() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-07 11:17 +0100
    Re: parsing print_r() output with preg_match_all() "R.Wieser" <address@not.available> - 2016-01-07 13:49 +0100
      Re: parsing print_r() output with preg_match_all() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-07 14:20 +0100
        Re: parsing print_r() output with preg_match_all() "R.Wieser" <address@not.available> - 2016-01-07 15:31 +0100
          Re: parsing print_r() output with preg_match_all() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-07 16:00 +0100
          Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-07 13:45 -0500
            Re: parsing print_r() output with preg_match_all() "R.Wieser" <address@not.available> - 2016-01-07 20:18 +0100
              Re: parsing print_r() output with preg_match_all() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-07 20:52 +0100
                Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-07 15:29 -0500
            Re: parsing print_r() output with preg_match_all() Tim Streater <timstreater@greenbee.net> - 2016-01-07 22:42 +0000
              Re: parsing print_r() output with preg_match_all() "R.Wieser" <address@not.available> - 2016-01-08 10:43 +0100
  Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-11 09:07 +0100
    Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-11 08:05 -0500
      Re: parsing print_r() output with preg_match_all() Arno Welzel <usenet@arnowelzel.de> - 2016-01-11 23:51 +0100
        Re: parsing print_r() output with preg_match_all() Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-01-12 00:31 +0100
        Re: parsing print_r() output with preg_match_all() Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-11 20:55 -0500
        Re: parsing print_r() output with preg_match_all() "R.Wieser" <address@not.available> - 2016-01-12 11:11 +0100
          Re: parsing print_r() output with preg_match_all() - question remains unanswered ... "R.Wieser" <address@not.available> - 2016-01-12 11:54 +0100
            Re: parsing print_r() output with preg_match_all() - question remains unanswered ... Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-12 11:25 +0000
              Re: parsing print_r() output with preg_match_all() - question remains unanswered ... "R.Wieser" <address@not.available> - 2016-01-12 13:41 +0100
                Re: parsing print_r() output with preg_match_all() - question remains unanswered ... "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-01-12 14:11 +0100
                Re: parsing print_r() output with preg_match_all() - question remainsunanswered ... "R.Wieser" <address@not.available> - 2016-01-12 14:34 +0100
                Re: parsing print_r() output with preg_match_all() - question remainsunanswered ... "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-01-12 15:03 +0100
                Re: parsing print_r() output with preg_match_all() - questionremainsunanswered ... "R.Wieser" <address@not.available> - 2016-01-12 15:50 +0100
                Re: parsing print_r() output with preg_match_all() - questionremainsunanswered ... "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-01-12 16:36 +0100
                Re: parsing print_r() output with preg_match_all() - Solved. "R.Wieser" <address@not.available> - 2016-01-12 21:28 +0100
                Re: parsing print_r() output with preg_match_all() - question remains unanswered ... Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-01-12 14:02 +0000
            Re: parsing print_r() output with preg_match_all() - question remains unanswered ... "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-01-12 12:42 +0100
              Re: parsing print_r() output with preg_match_all() - question remainsunanswered ... "R.Wieser" <address@not.available> - 2016-01-12 14:20 +0100
            Re: parsing print_r() output with preg_match_all() - question remains unanswered ... Jerry Stuckle <jstucklex@attglobal.net> - 2016-01-12 09:43 -0500
              Re: parsing print_r() output with preg_match_all() - question remainsunanswered ... "R.Wieser" <address@not.available> - 2016-01-12 16:11 +0100

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