array(1) {
  ["a"]=>
  array(1) {
    [0]=>
    array(1) {
      [2]=>
      int(3)
    }
  }
}
HipHop Warning: Cannot use a scalar value as an array in %s on line 7
int(4)
HipHop Warning: Cannot use a scalar value as an array in %s on line 11
array(1) {
  [0]=>
  bool(true)
}
array(1) {
  [0]=>
  string(1) "x"
}
HipHop Warning: Illegal string offset: -1 in %s on line 19
string(7) "abc e g"
int(1)
int(1)
HipHop Warning: Cannot use a scalar value as an array in %s on line 26
NULL