php - 使用memcached提示这个什么原因

Question

扩展什么的都安装了，

测试代码
$memcache = new Memcache;
$memcache->connect('localhost', 11211) or die ("Could not connect");
$version = $memcache->getVersion();
echo "Server's version: ".$version."<br/>n";
$tmp_object = new stdClass;
$tmp_object->str_attr = 'test';
$tmp_object->int_attr = 123;
$memcache->set('key', $tmp_object, false, 10) or die ("Failed to save data at the server");
echo "Store data in the cache (data will expire in 10 seconds)<br/>n";
$get_result = $memcache->get('key');
echo "Data from the cache:<br/>n";
var_dump($get_result);

Answer 1

phpinfo()查看扩展是否正确加载

Answer 2

bool extension_loaded ( string $name )

可以使用这个命令，看看拓展是否加载。你这个情况肯定是拓展加载失败了。