Install with composer

Create file named "composer.json" with the following content

{
  "type":"project",
  "repositories": [
   {
    "type": "package",
    "package": {
    "name": "vihv/vihv",
    "version": "3.0.1",
    "dist": {
      "url": "http://lcc.vihv.org/downloads/vihv-latest.zip",
      "type": "zip"
      }
    }
  }],
  "require":{
    "vihv/vihv":"3.0.1"
    },
  "config": {
    "secure-http": false
  }
}

Run

composer update

Composer will download vihvlcc library into vendor/vihv/vihv

in this folder you will find autoload.php file, include it in your project like this

require_once 'vendor/vihv/vihv/autoload.php'