我在调试留言板的时候出现了下面的问题：
Parse error: syntax error, unexpected $end in d:\Inetpub\www\ysg\input.php on line 24


这是我的input.php


//---------------------------------
$mysql_server_name = "10.3.3.61";
$mysql_username = "root";
$mysql_password = "123456";
$mysql_database = "serv";

//---echo---------------------------------
echo "$name";
echo "$sex";
echo "$email";
echo "$info";
$ip = getenv("REMOTE_ADDR");
echo "$ip";

//---input--------------------------------
$conn=mysql_connect("$mysql_server_name","$mysql_username","$mysql_password");
mysql_select_db("$mysql_database","$conn");
$sql = "INSERT INTO `gbook` ( `id` , `name` , `sex` , `email` , `info` , `ip` , `time_at` ) VALUES ('', '$name', '$sex', '$email', '$info', '$ip', NOW( ));
$result=mysql_query($sql);
$id = mysql_insert_id();
mysql_close($conn);
?>