Skip to main content

Hack & HHVM DocumentationHack HHVM HSL API

Overview
Hack API Classes
Hack API Functions
Hack API Interfaces
Hack API Traits

Hack API Interfaces

Hack API Interfaces

xhprof_run_trace

ConstCollection

Hack

Overview
Getting Started
Tools
API Reference

HHVM

Overview
Installation
Basic Usage
Configuration

Community

Hack & HHVM GitHub
Facebook Group
Hack Twitter
HHVM Twitter

Resources

Source for this Site
HHVM Blog
Hack Website
HHVM Website

Legal

Privacy
Terms

Copyright © 2026 Meta Platforms, Inc. Built with Docusaurus.