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Regex and preg match?

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Started by phpforfun, May 30 2009 12:35 PM

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#1
phpforfun
Posted 30 May 2009 - 12:35 PM

phpforfun

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I am trying to get the content of a text area of a page... when I return the result, it returns an empty array, which is odd, because the code seems to work fine when I test it with other pages.
My PregMatch
preg_match('#<textarea wrap="off" nowrap name="errlog" id="errtext" class="output" cols="80" rows="25" readonly>(.*?)</textarea>#', $page, $array);

Code on page
	<div align="center">

		<textarea wrap="off" nowrap name="errlog" id="errtext" class="output" cols="80" rows="25" readonly>[Sat May 30 13:19:55 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/cPanel_magic_revision_1187247941

[Sat May 30 13:19:52 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/cPanel_magic_revision_87687266601.2207, referer: http://blogforfree.net/geterror.php

[Sat May 30 13:19:52 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/cPanel_magic_revision_1229605105, referer: http://blogforfree.net/geterror.php

[Sat May 30 13:19:52 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/cPanel_magic_revision_9361523513.50525, referer: http://blogforfree.net/geterror.php

[Sat May 30 13:19:52 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/cPanel_magic_revision_1238671112, referer: http://blogforfree.net/geterror.php

[Sat May 30 13:19:52 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/cPanel_magic_revision_1231999238, referer: http://blogforfree.net/geterror.php

[Sat May 30 13:19:52 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/cPanel_magic_revision_73970499338.6905, referer: http://blogforfree.net/geterror.php

[Sat May 30 13:19:52 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/cPanel_magic_revision_1187247945, referer: http://blogforfree.net/geterror.php

[Sat May 30 13:19:52 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/cPanel_magic_revision_90618918027.6706, referer: http://blogforfree.net/geterror.php

[Sat May 30 13:19:52 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/cPanel_magic_revision_53782990950.6602, referer: http://blogforfree.net/geterror.php

[Sat May 30 13:19:52 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/cPanel_magic_revision_1238671078, referer: http://blogforfree.net/geterror.php

[Sat May 30 13:19:52 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/cPanel_magic_revision_1187247941

[Sat May 30 13:03:05 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/favicon.ico

[Sat May 30 13:03:02 2009] [error] [client 67.101.88.149] File does not exist: /home/blogforf/public_html/favicon.ico

[Sat May 30 11:59:00 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/testasdf

[Sat May 30 11:58:56 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/test

[Sat May 30 11:51:16 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n...ers/awstats.php

[Sat May 30 11:51:15 2009] [error] [client 70.176.218.8] File does not exist: /home/blogforf/public_html/pages/members/awstats_images, referer: http://blogforfree.n....php</textarea>

	</div>

</div>

I dont know if it matters or not, but the content of the textarea on the REAL page is actually 300 lines long, I shortened the error logs above..

Any idea why it wouldnt work?
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#2
phpforfun
Posted 30 May 2009 - 03:18 PM

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#3
Guest_Jordan_*
Posted 30 May 2009 - 04:03 PM

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I didn't have an answer for you, that is why I didn't reply. Orjan and John have a better grasp of regular expressions than I do. Are you sure that $page has data?

#4
John
Posted 30 May 2009 - 04:43 PM

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If you can explain to me what .*? means, I will give you a solution. I'm only asking because it doesn't make sense to me.
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#5
phpforfun
Posted 30 May 2009 - 04:45 PM

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It catches anything, but its already fixed... Line below works
 preg_match('#<textarea wrap="off" nowrap name="errlog" id="errtext" class="output" cols="80" rows="25" readonly>(.*?)</textarea>#is', $page, $array);

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#6
Guest_Jordan_*
Posted 30 May 2009 - 05:16 PM

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How did you come about adding is?

#7
John
Posted 30 May 2009 - 05:25 PM

John

    Writes binary right handed and hex left handed

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Actually the .* (dot-star) matches anything, The question mark makes the dot-star reluctant. If you were to use /o+/ in "Jooohn" you would match a single group of three o's. However, if you were to use /o+?/ you will get the same result, but you will match three individual o's rather than one group of three o's.

Here is a regular expression to match content between a pair of tags based on the elements id ($id).

#<([a-z]+)[^<>]*id=\"$id\"[^>]*>(.*)</\\1>#is

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