<?php

require 'vendor/autoload.php';

use Predis\Client as PredisClient;

$r = new PredisClient([
                'scheme'   => 'tcp',
                'host'     => '90.156.203.247',
                'port'     => 6379,
                'password' => 'Ir3Roovu',
                'database' => 15,
            ]);
$r->connect();
echo $r->set('foo', 'bar'), PHP_EOL;
// >>> OK

echo $r->get('foo'), PHP_EOL;
// >>> bar