incr_predis.php

<?php
require_once 'Predis.php';

$single_server = array(
    'host'     => '192.168.1.115',
    'port'     => 6379,
    'database' => 0
);

// simple set and get scenario

$redis = new Predis\Client($single_server);
$retval = $redis->incr('requests');
echo $retval . "\n";

?>