Where do I enter the code to insert file path and current session ID to the database?

<?php
session_start(); // Must start session first thing

// Here we run a login check
// Here we run a login check
$toplinks = "";
if (isset($_SESSION['id'])) {
    // Put stored session variables into local php variable
    $userid = $_SESSION['id'];
    $username = $_SESSION['username'];
    $toplinks = '<div id="Top_Links"><a  href="logout.php">Log Out </a>
             <a  href="member_account.php">My Account </a>
             <a  href="member_profile.php?id=' . $userid . '">' . $username . '</a> </div>';
} else {
   echo 'Please <a href="login.php">log in</a> to access your account';
  exit();
}
// Place Session variable 'id' into local variable
$id = $_SESSION['id'];
// Process the form if it is submitted
if ($_FILES['uploadedfile']['tmp_name'] != "") {
    // Run error handling on the file
    // Set Max file size limit to somewhere around 120kb
    $maxfilesize = 120000;
    // Check file size, if too large exit and tell them why
    if($_FILES['uploadedfile']['size'] > $maxfilesize ) {
        echo "<br /><br />Your image was too large. Must be 100kb or less, please<br /><br />
        <a href=\"edit_pic.php\">click here</a> to try again";
        unlink($_FILES['uploadedfile']['tmp_name']);
        exit();
    // Check file extension to see if it is .jpg or .gif, if not exit and tell them why
    } else if (!preg_match("/\.(gif|jpg)$/i", $_FILES['uploadedfile']['name'] ) ) {
        echo "<br /><br />Your image was not .gif or .jpg and it must be one of those two formats, please<br />
        <a href=\"edit_pic.php\">click here</a> to try again";
        unlink($_FILES['uploadedfile']['tmp_name']);
        exit();
        // If no errors on the file process it and upload to server
    } else {
        // Rename the pic
        $newname = "pic1.jpg";
        // Set the direntory for where to upload it, use the member id to hit their folder
        // Upload the file
        if (move_uploaded_file($_FILES['uploadedfile']['tmp_name'], "memberFiles/$id/".$newname)) {
            echo "Success, the image has been uploaded and will display to visitors!<br /><br />
            <a href=\"member_account.php\">Click here</a> to return to your profile edit area";

        $file="memberFiles/$id/".$newname;
        $sql="INSERT INTO file (path) VALUES ('$file')";

        if (!mysql_query($sql))
        {
        die('Error: ' . mysql_error());
        }
        echo "<font size = '5'><font color=\"#0CF44A\">SAVED TO DATABASE";


        } else {
            echo "There was an error uploading the file, please try again. If it continually fails, contact us by email. <br /><br />
            <a href=\"member_account.php\">Click here</a> to return to your profile edit area";
            exit();
        }
    } // close else after file error checks
} // close if post the form
?>