string(1) "2"
int(4)
string(1) "2"
int(6)
string(1) "2"
string(1) "2"
int(9)
string(5) "world"
int(11)
string(5) "empty"
int(13)
HipHop Fatal error: hphp_array_idx: search must be an array in %s on line 22