$checkUserSql="select * from google_login where email= '$email'";
$checkUserRes=mysql_query($checkUserSql);
$checkUserCount=mysql_num_rows($checkUserRes);
// Check email id checking in database
if($checkUserCount == 0){
$sql="insert into google_login(name,email,inserted_on)
values('$uname','$email',now())";
mysql_query($sql);
// If user email id not present in database than add it
}