PHP memcache 原子增减实例

<?php

/*
 * PHP Memcache - Increment / Decrement values in memcache
 */

$memcache = new Memcache;
$memcache->connect(‘localhost‘, 11211) or die("Could not connect");

if (!$memcache->get(‘counter‘))
    $memcache->add(‘counter‘, 1);
else
    $memcache->set(‘counter‘, 1);

echo "Current counter value : ".$memcache->get(‘counter‘)."<br />";

//increment counter by 3
$memcache->increment(‘counter‘, 3);

echo "Current counter value : ".$memcache->get(‘counter‘)."<br />";

//decrement counter by 1
$memcache->decrement(‘counter‘, 1);

echo "Current counter value : ".$memcache->get(‘counter‘)."<br />";
?>