Example function for incrementing a counter based on the key of $id in Redis.

example_redis_api_request.php

<?php
function api_request($id='nobody') {
	$redis = new Redis();

	if($redis->connect($GLOBALS['REDIS_HOST'], $GLOBALS['REDIS_PORT'])) {
		if($redis->auth($GLOBALS['REDIS_PASSWORD'])) {
			$redis->incr($id);
		} else {
			error_log('Error authenticating to redis!');
		}
	} else {
		error_log('Error connecting to redis!');
	}
}