extraction using regular expression

shrawansher has asked for the wisdom of the Perl Monks concerning the following question:

hey guy i'm a newbie at perl and facing some problem with extraction of a number using regexp into a variable. The string i need to look for is: |M| (avp-code = 268)(flags = 64)] = XXXX where XXXX is a no that i need to put in a variable.please help

Comment on extraction using regular expression

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Re: extraction using regular expression by moritz (Cardinal) on Aug 08, 2011 at 12:25 UTC
So, what have you tried? How did it fail? Show us some code, and read perlretut. Perl 6 - second systems done right	[reply]
Re: extraction using regular expression by jethro (Monsignor) on Aug 08, 2011 at 12:31 UTC
`my ($number)= $searchstring=~/\\|M\\|$avp-code = 268$$flags = 64$\] += (\d+)/; #or my ($number)= $searchstring=~/\Q\|M\|(avp-code = 268)(flags = 64)]\E = ( +\d+)/;` [download] The only difficult part is escaping all the characters that have a special meaning in regexes. Easier to use \Q\E to do that automatically	[reply] [d/l]
Re^2: extraction using regular expression by shrawansher (Novice) on Aug 16, 2011 at 05:27 UTC
thanks.i was getting stuck with the \issue.sorry for the bother though.realised it was kind of a trivial question.	[reply]
Re: extraction using regular expression by JavaFan (Canon) on Aug 08, 2011 at 12:55 UTC
Untested: `($number_newbie_needs) = "\|M\| (avp-code = 268)(flags = 64)] = XXXX" =~ + /\] = ([0-9]+)/;` [download] I'm assuming your numbers are non-negative integers in base ten.	[reply] [d/l]