php-redisRedis getset usage example

$previous = $redis->getset('a', 25);ctrl + cgithub

`$redis` Redis object after connection	`$previous` will be set to previous value of `a` key
`getset` returns current key value and sets new value after that	`'a'` name of the key to getset
`25` new value to set

<?php

$r = new Redis(); 
$r->connect('127.0.0.1', 6379);

$r->set('a', 5);
echo $r->getset('a', 25);

echo "\n";
echo $r->get('a');

5
25