access element with variable name

I have a checkbox table declared like this:

 for ($x = 0; $x < 6; $x++) {
                echo "<tr>";
                echo "<td>"; echo $days[$x];  echo '</td>'; //displays days

                       echo '<td><input type="checkbox" name="check_list[]" onClick="toggle(this, '.$x.')" value="1"/> All';
                       echo '<input type="hidden" name="check_list[]" onClick="toggle(this, '.$x.')" value="0"/></td>'; //creates check all buttons

                       for ($y = 0; $y < 12; $y++){
                        echo '<td><input type="checkbox" name="'.$x.'" value="1"> Bar 1<br/></td>';  //creates the other buttons
                        }
                 echo "</tr>";
            } 

The name="check_list[]" checkbox selects all the checkboxes in the same row when checked. It is done with this script:

<script language="JavaScript">
                    function toggle(source, id) {
                            checkboxes = document.getElementsByName(id);
                            for(var i=0, n=checkboxes.length;i<n;i++) {
                                checkboxes[i].checked = source.checked;
                            }
                    }
</script>

Then the data are stored like this in the database:

<?php
        $i=0;       $store[20];     $check[20];
    foreach($_POST['check_list'] as $value){
            $store[$i] =  $value;               $i= $i + 1;
    } 



    $check = str_split(preg_replace('/10/','1',implode('',$store)));
     array_walk($check, 'intval');



    if($check[0]) {      $monday  = 1; }        if(!$check[0]) {$monday  = 2; }                 
    if($check[1]) {      $tuesday  = 1; }       if(!$check[1]) {$tuesday  = 2; }                    
    if($check[2]) {      $wednesday  = 1; }     if(!$check[2]) {$wednesday  = 2; }                  
    if($check[3]) {      $thursday  = 1; }      if(!$check[3]) {$thursday  = 2; }               
    if($check[4]) {      $friday  = 1; }        if(!$check[4]) {$friday  = 2; }                 
    if($check[5]) {      $saturday  = 1; }      if(!$check[5]) {$saturday  = 2; }
?>

Obviously, this is not the whole code (I wrote the sql query to connect and insert the variables for the days. And it worked). But till now I am only taking the values of the first checkbox for each row. Which means that if I check it, all the checkboxes of that row are checked. But I am only reading the fact that all the checkboxes of that row are checked. If I only check a normal checkbox in a row, its value is not posted and I the only info stored is that not all checkboxes are checked (represented by value 2).

What I want to do is take the value of the normal checkboxes for each row instead, and concatenate them in a number. For example, for monday checkboxes (checked, unchecked, unchecked, checked) i would store $monday = 1221. The same must be done for all days (monday to saturday)