mysql查询（insert）里面的函数无法执行

i have a function like this:

我有这样的功能：

function record(){
$table = new table;
$clogin = new login;
$date = date("F j, Y, g:i a"); 
$ip =  $_SERVER['REMOTE_ADDR'];
$uri = $_SERVER['REQUEST_URI'];
mysql_query("insert into log (player, date, ip, on) values ('$clogin->username', '$date', '$ip', '$uri')");
$fopen = fopen("data/log.txt", "a+");
fwrite ($fopen, "PLAYER: $clogin->username DATE: $date IP: $ip ON: $uri\n");
fclose ($fopen); }
funct