注册时出现PHP错误

嘿，伙计们用这个代码得到了一个错误：

<?php     //start php tag
    //include connect.php page for database connection
    include('connect.php')
    //if submit is not blanked i.e. it is clicked.
    if(isset($_REQUEST['submit'])!='')
    {
        if($_REQUEST['name']==''||$_REQUEST['email']==''||$_REQUEST['password']=='')
        {
            echo "please fill the empty field.";
        }
        else
        {
            $sql="insert into FunReads(user_name,user_email,user_password)    values('".$_REQUEST['name']."', '".$_REQUEST['email']."',                         '".$_REQUEST['password']."')";
            $res=mysql_query($sql);
            if($res)
            {
                echo "Record successfully inserted";
            }
            else
            {
                echo "There is some problem in inserting record";
            }
        }
    }
?>

错误为

分析错误：语法错误，第5行上/home/ubuntu/workspace/registration.php中出现意外的"if"（T_if）

所以它在这条线上：

if(isset($_REQUEST['submit'])!='')