Put a checkbox in each table cell

I'm trying to add checkboxes to each cell in my table. If $columns['mything$record'] is equal to 1, I want a checkbox that's checked to show up. If $columns['mything$record'] is equal to 0, I want a blank checkbox to show up. I've created if statements which one can view below, but they don't put a checkbox in each table cell with the respective value, only one blank checkbox appears at the top of the page. How can I put checkboxes in each cell that are checked and unchecked based on the cell value?

$columns = array(
    1 => array(
        "selectFieldName"       => "nrs.record nrRecord",
        "resultFieldName"       => "nrRecord",
        "headerName"            => "NT#",
        "defaultSortOrder"  => -1,
    ),
        array(
        "selectFieldName"       => "nrs.title",
        "resultFieldName"       => "title",
        "headerName"            => "Title",
        "defaultSortOrder"  => 1,
    ),  

);
$selectedColumnNumbers = array(1,2,3);
$counter=4;


foreach($shortNameArray as $record=>$name){


    if($record>0){
    $columns[]=array(


        "selectFieldName"       => "CASE WHEN $record IN (GROUP_CONCAT(dm_nr_links.dmRecord)) THEN 1 ELSE 0 END mything$record",
        "resultFieldName"       => "mything$record",
        "headerName"            => "$name",
        "defaultSortOrder"  => 1,

        );


        $selectedColumnNumbers[]=$counter;
        $counter++;

        if ($columns['mything$record'] == 1) {

             echo "<input type='checkbox' name='PLJan' ";

                    echo  "checked='checked'";
            } 


        if ($columns['mything$record'] == 0) {



            echo "<input type='checkbox' name='JLFeb' ";



        }
    }
}