use strict;

   sub main{
      my $text   = qq{a,b,"hey, you","str1, str2, str3",end};
      print "Input: $text\n\n";

      # Split the delimiters
      my @values = split( /(?:\,|(\".*?\"))/ , $text);
      
      # Remove the created blanks
      @values    = grep{$_ ne ''} @values;
      
      # Output
      foreach (0..$#values){
          print "$_: $values[$_] \n";
      }
   }
   
   main();

##</code><code>##

Input: a,b,"hey, you","str1, str2, str3",end

0: a
1: b
2: "hey, you"
3: "str1, str2, str3"
4: end