use strict;
use warnings;
use Data::Dumper;

my $string = '<?test=6565?><?some=6565?><?test=6566?><?other=6566?><?test=6567?><?data=6567?><?test=6568?>xxx<?test=6569?>';
my @array1 = $string =~ m/(<[^>]*test[^>]*>)/g;

print Dumper(\@array1);
__END__
$VAR1 = [
          '<?test=6565?>',
          '<?test=6566?>',
          '<?test=6567?>',
          '<?test=6568?>',
          '<?test=6569?>'
        ];