(PECL memcache >= 0.2.0)
Memcache::getVersion — Return version of the server
Memcache::getVersion() returns a string with server's version number. Also you can use memcache_get_version() function.
Returns a string of server version number or FALSE on failure.
Example #1 Memcache::getVersion() example
<?php
/* OO API */
$memcache = new Memcache;
$memcache->connect('memcache_host', 11211);
echo $memcache->getVersion();
/* procedural API */
$memcache = memcache_connect('memcache_host', 11211);
echo memcache_get_version($memcache);
?>