memcache and memcached can be use check.

memcache-d.php

<?php
$m = null;
if (extension_loaded('memcached')) {
    echo "use memcached.\n";
    $m = new Memcached();
} elseif (extension_loaded('memcache')) {
    echo "use memcache.\n";
    $m = new Memcache();
} else {
    echo "memcache and memcached is not installed.\n";
}

if ($m !== null) {
    $m->addServer('localhost', 11211);

    $m->set('int', 99);
    $m->set('string', 'a simple string');
    $m->set('array', array(11, 12));
    /* expire 'object' key in 5 minutes */
    $m->set('object', new stdclass, time() + 300);

    echo("\n");
    var_dump($m->get('int'));
    var_dump($m->get('string'));
    var_dump($m->get('array'));
    var_dump($m->get('object'));
}