I am working with WordPress and I made a form in the admin section. I am trying to submit it to another database (not the default wp one) so I switch databases successfully and do an insert query but I keep getting an error.

This is my code: 

```
$selected = mysql_select_db( 'petracms', $serverAccess );
if (!$selected) {
    die ('Can\'t use foo : ' . mysql_error());
}
$query = "INSERT INTO `petra_customers` (`FirstName`, `LastName`, `Email`, `Phone`) VALUES ($fName, $lName, $email, $phone)";
$result = mysql_query($query);
if (!$result) {
    die('Invalid query: ' . mysql_error());
}

```

I keep getting this error:

> 
> Invalid query: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '@gmail.com, 5859475566)' at line 1
> 
> 
> 

This is my input: `(Adam, Page, bofumme@gmail.com, 5859475566)`

I have no idea what I am doing wrong