Extract a Category ID from a URL

[JFM]

Hi,

I need to C.

The ID always follows “categoryId=” in the URL string and its always numbers.  I can’t use SCAN because the ID can be in a different place in the URL and is not always the same length .

URL

http://www.mywebsite.com/family/index.jsp?categoryId=61765546&cp=1766205&ab=en_US_MLP_SLOT_1_S1_SHOP

http://www.mywebsite.com/shop/index.jsp?categoryId=62593996&AB=en_US_HP_S2_Men_slot_1_S2_ShopNow

http://www.mywebsite.com/family/index.jsp?categoryId=62593846&cp=1766205&ab=ln_men_cs_thetrend:tropi...

http://www.mywebsite.com/family/index.jsp?categoryId=62594006&cp=1766205&AB=en_US_MLP_P_slot_10_S1_S...

http://www.mywebsite.com/family/index.jsp?categoryId=56906456

http://www.mywebsite.com/shop/index.jsp?categoryId=62593866&cp=1766205&ab=ln_men_cs_theshirt

http://www.mywebsite.com/family/index.jsp?categoryId=62593876&cp=1795710&AB=en_US_MLP__slot_2_S1_Sho...

http://www.mywebsite.com/shop/index.jsp?categoryId=57155616

http://www.mywebsite.com/shop/index.jsp?categoryId=1766618&ab=tn_women_golfandTennis&cp=17666

Again, its always the numbers which follow  "categoryId=" in the string. There may be other IDs in the URL which don't follow category ID so I need to make sure I'm not picking those up.  This is the output I'm looking for:

URL	categoryId
http://www.mywebsite.com/family/index.jsp?categoryId=61765546&cp=1766205&ab=en_US_MLP_SLOT_1_S1_SHOP	61765546
http://www.mywebsite.com/shop/index.jsp?categoryId=62593996&AB=en_US_HP_S2_Men_slot_1_S2_ShopNow	62593996
http://www.mywebsite.com/family/index.jsp?categoryId=62593846&cp=1766205&ab=ln_men_cs_thetrend:tropi...	62593846
http://www.mywebsite.com/family/index.jsp?categoryId=62594006&cp=1766205&AB=en_US_MLP_P_slot_10_S1_S...	62594006
http://www.mywebsite.com/family/index.jsp?categoryId=56906456	56906456
http://www.mywebsite.com/shop/index.jsp?categoryId=62593866&cp=1766205&ab=ln_men_cs_theshirt	62593866
http://www.mywebsite.com/family/index.jsp?categoryId=62593876&cp=1795710&AB=en_US_MLP__slot_2_S1_Sho...	6259387
http://www.mywebsite.com/shop/index.jsp?categoryId=57155616	57155616
http://www.mywebsite.com/shop/index.jsp?categoryId=1766618&ab=tn_women_golfandTennis&cp=1766618	1766618

Any assistance is greatly appreciated. Thanks!

[Haikuo]

/*this one gives you the id if your raw data needs to be read in*/

data have;

     infile cards truncover dlm='&';

     input @'categoryId=' id @1 url $200.;

     cards;

http://www.mywebsite.com/family/index.jsp?categoryId=61765546&cp=1766205&ab=en_US_MLP_SLOT_1_S1_SHOP

http://www.mywebsite.com/shop/index.jsp?categoryId=62593996&AB=en_US_HP_S2_Men_slot_1_S2_ShopNow

http://www.mywebsite.com/family/index.jsp?categoryId=62593846&cp=1766205&ab=ln_men_cs_thetrend:tropi...

http://www.mywebsite.com/family/index.jsp?categoryId=62594006&cp=1766205&AB=en_US_MLP_P_slot_10_S1_S...

http://www.mywebsite.com/family/index.jsp?categoryId=56906456

http://www.mywebsite.com/shop/index.jsp?categoryId=62593866&cp=1766205&ab=ln_men_cs_theshirt

http://www.mywebsite.com/family/index.jsp?categoryId=62593876&cp=1795710&AB=en_US_MLP__slot_2_S1_Sho...

http://www.mywebsite.com/shop/index.jsp?categoryId=57155616

http://www.mywebsite.com/shop/index.jsp?categoryId=1766618&ab=tn_women_golfandTennis&cp=17666

;

/*This one gives you the id if your data is already in a table*/

data want;

     set have;

     id_prx=prxchange('s/.+categoryId=(\d+).+/$1/o',-1,url);

run;

[Ksharp]

Code: Program

data have;
   infile cards truncover ;
   input  url $200.;
   cards;
http://www.mywebsite.com/family/index.jsp?categoryId=61765546&cp=1766205&ab=en_US_MLP_SLOT_1_S1_SHOP
http://www.mywebsite.com/shop/index.jsp?categoryId=62593996&AB=en_US_HP_S2_Men_slot_1_S2_ShopNow
http://www.mywebsite.com/family/index.jsp?categoryId=62593846&cp=1766205&ab=ln_men_cs_thetrend:tropi...
http://www.mywebsite.com/family/index.jsp?categoryId=62594006&cp=1766205&AB=en_US_MLP_P_slot_10_S1_S...
http://www.mywebsite.com/family/index.jsp?categoryId=56906456
http://www.mywebsite.com/shop/index.jsp?categoryId=62593866&cp=1766205&ab=ln_men_cs_theshirt
http://www.mywebsite.com/family/index.jsp?categoryId=62593876&cp=1795710&AB=en_US_MLP__slot_2_S1_Sho...
http://www.mywebsite.com/shop/index.jsp?categoryId=57155616
http://www.mywebsite.com/shop/index.jsp?categoryId=1766618&ab=tn_women_golfandTennis&cp=17666
;
data want;
 set have;
pid= prxparse('/(?<=categoryId=)\d+/i');
call prxsubstr(pid, url, position, length);
if position ne 0 then do;
 match = substr(url, position, length);
end;
drop pid position length;
run;