Standard input is empty

array(2) {
  [0]=>
  array(15) {
    [0]=>
    string(5) "\x00M"
    [1]=>
    string(4) "\x00"
    [2]=>
    string(4) "\xC4"
    [3]=>
    string(4) "\x00"
    [4]=>
    string(5) "\x00I"
    [5]=>
    string(5) "\x00S"
    [6]=>
    string(4) "\x00"
    [7]=>
    string(5) "\x004"
    [8]=>
    string(5) "\x000"
    [9]=>
    string(5) "\x003"
    [10]=>
    string(5) "\x001"
    [11]=>
    string(5) "\x002"
    [12]=>
    string(5) "\x000"
    [13]=>
    string(5) "\x000"
    [14]=>
    string(5) "\x002"
  }
  [1]=>
  array(15) {
    [0]=>
    string(3) "00M"
    [1]=>
    string(2) "00"
    [2]=>
    string(2) "C4"
    [3]=>
    string(2) "00"
    [4]=>
    string(3) "00I"
    [5]=>
    string(3) "00S"
    [6]=>
    string(2) "00"
    [7]=>
    string(3) "004"
    [8]=>
    string(3) "000"
    [9]=>
    string(3) "003"
    [10]=>
    string(3) "001"
    [11]=>
    string(3) "002"
    [12]=>
    string(3) "000"
    [13]=>
    string(3) "000"
    [14]=>
    string(3) "002"
  }
}