Request parameters in PHP on HHVM

Question

I'm running HHVM 3.2.0 and trying to get access to GET and POST request parameters. The problem is, HHVM doesn't support access to PHP superglobals ($_GET, $_POST, $_SERVER, etc).

The only other way I know of getting access to request parameters in PHP is via the filter_input function, but is that really best practice (if I'm just using the raw filter)? It seems as though HHVM should support something cleaner than that. (What about Hack?)

Does hhvm support [`php://input`](http://php.net/manual/en/wrappers.php.php)? — Jared Farrish, Jul 22 '14 at 22:19
@JaredFarrish I don't believe so. Not directly at least. Source: http://docs.hhvm.com/manual/en/wrappers.php.php — Libbux, Jul 22 '14 at 22:20
Have you tried it? I'm seeing examples around using `fopen()` with `php://memory`, which "appears" to be shown as not supported on that page. Also, there's [this documentation page](http://docs.hhvm.com/manual/en/features.commandline.io-streams.php), showing using three more listed on that page. That documentation looks pretty suspect to me. — Jared Farrish, Jul 22 '14 at 22:33
@JaredFarrish No, but this all looks horrible. Reading request parameters is one of the principle operations of any script... How can it be so obscure? — Libbux, Jul 22 '14 at 22:37
I'm looking around and there's an awful lot of projects that seem to support hhvm. Symfony, for instance, and I can't find anything [specific to the way it's setup](http://www.leaseweblabs.com/2014/05/symfony-hhvm-3-nginx-1-4-vs-php-5-5-apache-2-4/). — Jared Farrish, Jul 22 '14 at 22:57
Do they not exist at all in HHVM? See [this post indicating that `$_POST` is available](http://hhvmhack.blogspot.com/2014/03/a-simple-tutorial.html). — elixenide, Jul 23 '14 at 02:24

score 4 · Accepted Answer · answered Jul 23 '14 at 02:01

4

HHVM absolutely supports superglobals in PHP code -- they're a really key part of PHP! The docs page you've linked to is simply wrong, and I've filed a bug to get it fixed.

In strict mode Hack code, superglobals are not supported; this cookbook example shows how you can access them via partial mode.

answered Jul 23 '14 at 02:01

Josh Watzman

7,060
1
18
26

since all links in this post are now dead, I can only downvote his otherwise promising answer – derabbink Mar 10 '18 at 19:28
And how is it now inversion 4.x? How can the $_GET, $_POST, $_COOKIE, $_SERVER be reached? – Zoltán Fekete May 02 '19 at 16:17

score 0 · Answer 2 · answered Mar 03 '21 at 07:44

Seems like they added HH\global_get() to get global variables.

https://docs.hhvm.com/hack/reference/function/HH.global_get/

To put everything together

use namespace \Facebook\TypeSpec;

// get $_GET using global_get
function global_get_get(): darray<arraykey, mixed> {
  $spec = TypeSpec\darray(
    TypeSpec\arraykey(),
    TypeSpec\mixed(),
  );
  return $spec->assertType(\HH\global_get("_GET"));
}

Request parameters in PHP on HHVM

2 Answers2