static function testCF()
{
$key = time();
$t = new CassandraCF('mall', 'UserInfo');
$cdata = array('name' => 'user1', 'time' => time(), 'arr' => array('dfd', 'dfds'));
echo "before insert \n";
print_r($cdata);
$t->put($cdata, $key);
$retdata = $t->get($key);
echo "after insert get\n";
print_r($retdata);
$udata['name'] = 'user12 modify';
$udata['newcol'] = 'neww colvalue';
$scname = $t->put($udata, $key);
$retdata = $t->get($key);
echo "after update get\n";
print_r($retdata);
echo '$t->get_count($key) = ' . $t->get_count($key) . "\n";
$t->erase($key, array('name', 'time'));
$retdata = $t->get($key);
echo "after delete cols get\n";
print_r($retdata);
echo '$t->get_count($key) = ' . $t->get_count($key) . "\n";
}