MySQLi预备语句插入where子句[重复]

This question already has an answer here:

Insert using Where clause 4 answers
WHERE clause in INSERT statement using mysql/php [closed] 4 answers
How to add a where clause in a MySQL Insert statement? 8 answers
MySQL Insert Where query 25 answers

I am trying to use MySQLi prepared statement to insert values in ProfileImg column and I want to use WHERE clause with it, how should I implement this?

Here is my current code:

    [TRUNCATED]
    $userid = $_POST['userid'];
    $stmt = $conn->prepare("INSERT INTO Users (ProfileImg) VALUES (?) WHERE ID=?");
    $stmt->bind_param("si", $file, $userid);

    // set parameters and execute
    $stmt->execute();
    echo "succeeded";

    $stmt->close();
    $conn->close();
    ?>

</div>