sas substring up to first space - regex

Question

I am analyzing data. I need to extract everything from these strings before the first space. How can I extract the substring of everything up to the first space. I am using SAS and have used PRXMATCH but not familiar with doing this. Thanks!
0518Audible adbl.co/bill NJ 01
06257-ELEVEN CHICAGO IL Purchase $33.30 Cash Back $10.00
0625#03345 JEWEL CHICAGO IL Purchase $58.58 Cash Back $20.00 00
So in my output I need:
0518Audible
06257-ELEVEN
0625#03345
I then need to extract only the first numbers so I get:
0518
06257
0625
Any help is greatly appreciated. Thanks much
Did not work:
TXN_DESCRIPTION_2=prxmatch('/^\d+/', TXN_DESCRIPTION_1);

Answer 1

Use prxchange.
data have;
length string $500.;
string="0518Audible adbl.co/bill NJ 01";output;
string="06257-ELEVEN CHICAGO IL Purchase $33.30 Cash Back $10.00";output;;
string="0625#03345 JEWEL CHICAGO IL Purchase $58.58 Cash Back $20.00 00";output;
run;
data want;
set have;
string1=prxchange('s/(^\S+).*/$1/',-1,string);
string2=prxchange('s/(^\d+).*/$1/',-1,string);
run;

Answer 2

SAS has some simple string manipulation methods that can be used also, if desired:
data have;
length str $500.;
str="0518Audible adbl.co/bill NJ 01";output;
str="06257-ELEVEN CHICAGO IL Purchase $33.30 Cash Back $10.00";output;
str="0625#03345 JEWEL CHICAGO IL Purchase $58.58 Cash Back $20.00";output;
run;
data want;
set have;
str1=scan(str,1," ");
str2=substr(str,1,notdigit(str)-1);
run;