use Devel::Peek;

sub dump_as_str {
    my $str;

    # redirect STDERR temporarily
    open(my $ORIGSTDERR, ">&", STDERR)
        and close(STDERR)
        and open(STDERR, ">", \$str)
        or die($!);

    {
       no warnings 'uninitialized';
       Dump($_[0]);
    }

    # restore STDERR
    open(STDERR, ">&=" . fileno($ORIGSTDERR))
        or die($!);

    return $str;
}

my @c = (11,22,33);
print "dump_as_str> " . dump_as_str(\@c);
print "-" x 40 . "\n";
Dump(\@c);

__END__
dump_as_str> SV = RV(0x8076b48) at 0x804de48
  REFCNT = 1
  FLAGS = (ROK)
  RV = 0x81aee20
  SV = PVAV(0x8163fa8) at 0x81aee20
    REFCNT = 2
    FLAGS = (PADBUSY,PADMY)
    IV = 0
    NV = 0
    ARRAY = 0x805ffd0
    FILL = 2
    MAX = 3
    ARYLEN = 0x0
    FLAGS = (REAL)
    Elt No. 0
    SV = IV(0x81a7fc0) at 0x804dc20
      REFCNT = 1
      FLAGS = (IOK,pIOK)
      IV = 11
    Elt No. 1
    SV = IV(0x81a7fc4) at 0x804dd40
      REFCNT = 1
      FLAGS = (IOK,pIOK)
      IV = 22
    Elt No. 2
    SV = IV(0x81a7fc8) at 0x804dde8
      REFCNT = 1
      FLAGS = (IOK,pIOK)
      IV = 33
----------------------------------------
SV = RV(0x8076b48) at 0x804de48
  REFCNT = 1
  FLAGS = (TEMP,ROK)
  RV = 0x81aee20
  SV = PVAV(0x8163fa8) at 0x81aee20
    REFCNT = 2
    FLAGS = (PADBUSY,PADMY)
    IV = 0
    NV = 0
    ARRAY = 0x805ffd0
    FILL = 2
    MAX = 3
    ARYLEN = 0x0
    FLAGS = (REAL)
    Elt No. 0
    SV = IV(0x81a7fc0) at 0x804dc20
      REFCNT = 1
      FLAGS = (IOK,pIOK)
      IV = 11
    Elt No. 1
    SV = IV(0x81a7fc4) at 0x804dd40
      REFCNT = 1
      FLAGS = (IOK,pIOK)
      IV = 22
    Elt No. 2
    SV = IV(0x81a7fc8) at 0x804dde8
      REFCNT = 1
      FLAGS = (IOK,pIOK)
      IV = 33