Filling Undefined values in an array with a null value

[KSI]

Currently I have a table that presents a count of records next to the title of the particular product. To do this I'm using the following code:

View Class:

<?php
    $ls_arr = array(1=>'Open',8=>'Hot',2=>'Closed',3=>'Transacted',4=>'Dead',9=>'Follow Up',11=>'Working'); 
     foreach($groupedleads as $grplead){
        $statuses[] = $status = $ls_arr[$grplead["lead_status"]];
        if($grplead["title"] == NULL || $grplead["title"] == '')
            $grplead["title"] = "Unknown";
        if(isset($grplead["title"]))
            $titles[] = $title = $grplead["title"];
        $leaddata[$status][$title] = $grplead["leadnum"];
    }

foreach($groupedleads_status as $grplead){
  $statuses[] = $status = $ls_arr[$grplead["lead_status"]];
    if($grplead["title"] == NULL || $grplead["title"] == '')
        $grplead["title"] = "Unknown";
    if(isset($grplead["title"]))
        $titles[] = $title = $grplead["title"];
    $leaddatastatus[$status][$title][$sub_status] = $grplead["leadnum"];
}
?>
<?php
if(is_array($titles))
  foreach($titles as $title){ 
?>
    <tr>
        <?php 
          echo "<td>".$title."</td>";
              foreach ($statuses as $status) {
                    $num = $leaddata[$status][$title];
                    $contacts = $leaddatastatus[$status][$title][$sub_status];  

                  $status_num = array_flip($ls_arr)[$status];
                  if($contacts != ''){
                  echo "<td><a target='_blank' href='" . site_url('reports/lists?source=' . $title . '&status=' . $status_num . '&sub_status=') . "'>".$num."</a>
                  <font size= '1'><a target='_blank' href='".site_url('reports/lists?source=' . $title . '&status=' . $status_num . '&sub_status=6') . "'>". "Not Contacted - ".$contacts."</a></font></td>";
                  }else{
                  echo "<td><a target='_blank' href='" . site_url('reports/lists?source=' . $title . '&status=' . $status_num . '&sub_status=' . $sub_status) . "'>".$num."</a></td>";
                  }
          ?>
    </tr>
<?php } ?>

Now I did a var_dump on $leadstatus and it gave the following output:

Now there are values that are not defined in the second array which are defined in the first. So at those places it gives me a warning message saying Undefined array key Sign Boards. So I want a way so that it displays all the titles regardless of the title being there or not and display the count for that as null.

[Barand]

Did you you mean something like this?

$data = [ 'Hot' => [ 'A' => 5,
                     'B' => 20,
                     'C' => 15,
                     'D' => 10,
                     'E' => 8
                   ],
          'Dead' => [ 'A' => 15,
                      'B' => 30,
                      'F' => 55,
                      'C' => 40,
                      'G' => 60,
                    ]
        ];
echo '<pre> BEFORE ' . print_r($data, 1) . '</pre>';          // original array
//
//  GET ALL KEYS
//
$keys = [];        
foreach ($data as $k1 => $v1) {
    $keys = array_merge($keys, array_keys($v1));
}
$keys = array_unique($keys);
$blank_values = array_fill_keys($keys, null);
//
//  INSERT MISSING KEYS INTO THE SUBARRAYS
//
foreach ($data as $k => &$subarray) {
    $subarray = array_merge($blank_values, $subarray);
}

echo '<pre> AFTER ' . print_r($data, 1) . '</pre>';            // array after processing

which gives...

BEFORE Array
(
    [Hot] => Array
        (
            [A] => 5
            [B] => 20
            [C] => 15
            [D] => 10
            [E] => 8
        )

    [Dead] => Array
        (
            [A] => 15
            [B] => 30
            [F] => 55
            [C] => 40
            [G] => 60
        )

)


 AFTER Array
(
    [Hot] => Array
        (
            [A] => 5
            [B] => 20
            [C] => 15
            [D] => 10
            [E] => 8
            [F] => 
            [G] => 
        )

    [Dead] => Array
        (
            [A] => 15
            [B] => 30
            [C] => 40
            [D] => 
            [E] => 
            [F] => 55
            [G] => 60
        )

)

 

[kicken]

You can simply use the null coalescing operator when reading the values from your array to remove the warning.

$num = $leaddata[$status][$title] ?? null;
$contacts = $leaddatastatus[$status][$title][$sub_status] ?? null;