If you just want to grab one record, or know that you are only expecting one result you can use the following code:

<?php
// Connect to the database
$conn = mysqli_connect("localhost", "username", "password", "database_name", "Port Number If Needed");

// Check connection
if (!$conn) {
    die("Connection failed: " . mysqli_connect_error());
}

// Limit to one record
$stmt = mysqli_prepare($conn, "SELECT Field1, Field2, etc FROM YourTable WHERE ID = ? LIMIT 1");

// Bind and Execute our statement
mysqli_stmt_bind_param($stmt, "i", $ID);
mysqli_stmt_execute($stmt);

// Get result set
$result = mysqli_stmt_get_result($stmt);

// Get the single row from the result set ($result) (No loop needed!)
$SingleRow = mysqli_fetch_assoc($result);

// 5. Use the data
if ($SingleRow) {
    // We have a single row returned
    echo "<h1>Editing: " . htmlspecialchars($SingleRow['Field1']) . "</h1>";
} else {
    echo "Record not found.";
}

mysqli_stmt_close($stmt);
mysqli_close($conn)

?>