I have a MySQL database with auto-increment column "line numbers." In the form that is being submitted to the script, there are check boxes. I don't know how many check boxes there are, because each `Customer` has a different number of services that they're allowed to access. When the check box is clicked, they've used a service and the integer in column `Available` for that row needs to decrease by one. Sometimes, the user can say that multiple services were used and more than one row needs to be affected. 

Where I'm becoming stuck is on two things: how the check boxes are named, and if I name them by the line number, how to access them with PHP. 

```
while($cell = mysqli_fetch_array($service_details_query)) {
                    echo "</br>";
                    echo "<input type='checkbox' name='" . $cell['line_item'] . "'>";
                }

```

The above code is how I'm making the check box. Probably the biggest part of the question is how I could better name it so that I can predict what names to look for (`$_POST[name]`) when the form is submitted (instead of a random number).

The other part I'm getting stuck on is, if I do decide to keep the naming strategy, how to fetch it. What I've thought of is to use a loop to extract the true/false data that's carried, but I don't know how to execute that. Sure, I can write a `for` or `while` loop, but I don't know how to extract the *name* of the object. 

* *Is there any way I could carry extra data to a PHP script, other than the name?*
* *Is there a better way I could name the check box so that I'm not stuck having to figure out a complicated way of finding the data, retrieving the name, etc.*

I'm sort of a beginner when it comes to PHP. I know how to get my way around with `for` loops, `while` loops, basic commands such as echo... but I'm really lacking