This API is part of the Hack Standard Library, not HHVM itself.
Returns whether the two given dicts have the same entries, using strict equality
namespace HH\Lib\Dict; function equal<Tk as arraykey, Tv>( dict<Tk, Tv> $dict1, dict<Tk, Tv> $dict2, ): bool;
To guarantee equality of order as well as contents, use
dict<Tk, Tv> $dict1
dict<Tk, Tv> $dict2