Question

I have arrays like this.

[11] => Array
    (
        [transactioncurrencyid] => Array
            (
                [!name] => US Dollar
                [!] => {041E3DC9-D938-DD11-982C-0013724C58B7}
            )

        [smi_processingmonth] => Array
            (
                [!date] => 6/1/2011
                [!time] => 2:27 PM
                [!] => 2011-06-01T14:27:00-07:00
            )

        [smi_cchistoryid] => {678C5036-9EAA-E111-88E0-00155D010302}
        [smi_includeindeal] => Array
            (
                [!name] => No
                [!] => 0
            )

                  [smi_locationid] => Array
            (
                [!name] => 1134 Hooksett Rd
                [!] => {5CC1585B-91AA-E111-88E0-00155D010302}
            )
    )

[12] => Array
    (
        [transactioncurrencyid] => Array
            (
                [!name] => US Dollar
                [!] => {041E3DC9-D938-DD11-982C-0013724C58B7}
            )


        [smi_processingmonth] => Array
            (
                [!date] => 5/1/2011
                [!time] => 2:27 PM
                [!] => 2011-05-01T14:27:00-07:00
            )

        [smi_cchistoryid] => {688C5036-9EAA-E111-88E0-00155D010302}
        [smi_includeindeal] => Array
            (
                [!name] => No
                [!] => 0
            )

        [smi_locationid] => Array
            (
                [!name] => 1134 Hooksett Rd
                [!] => {5CC1585B-91AA-E111-88E0-00155D010302}
            )
    )

How can i group them by location id then by smi_processingmonth

So I get something like this

[1134 Hooksett Rd] => Array
    (
        [ 5/1/2011] = array(
            [transactioncurrencyid] => Array
            (
                [!name] => US Dollar
                [!] => {041E3DC9-D938-DD11-982C-0013724C58B7}
            )


            [smi_processingmonth] => Array
                (
                    [!date] => 5/1/2011
                    [!time] => 2:27 PM
                    [!] => 2011-05-01T14:27:00-07:00
                )

            [smi_cchistoryid] => {688C5036-9EAA-E111-88E0-00155D010302}
            [smi_includeindeal] => Array
                (
                    [!name] => No
                    [!] => 0
                )

            [smi_locationid] => Array
                (
                    [!name] => 1134 Hooksett Rd
                    [!] => {5CC1585B-91AA-E111-88E0-00155D010302}

             )
           )
         [1/1/2011] = array(
          [transactioncurrencyid] => Array
            (
                [!name] => US Dollar
                [!] => {041E3DC9-D938-DD11-982C-0013724C58B7}
            )

        [smi_processingmonth] => Array
            (
                [!date] => 6/1/2011
                [!time] => 2:27 PM
                [!] => 2011-06-01T14:27:00-07:00
            )

        [smi_cchistoryid] => {678C5036-9EAA-E111-88E0-00155D010302}
        [smi_includeindeal] => Array
            (
                [!name] => No
                [!] => 0
            )

                  [smi_locationid] => Array
            (
                [!name] => 1134 Hooksett Rd
                [!] => {5CC1585B-91AA-E111-88E0-00155D010302}
            )
            )
    )

I have tried

   foreach($array as $keys)
                {

                    $key =  $keys['smi_processingmonth']['!date'];;
                    if (!isset($groups[$key])) 
                    {
                        $groups[$key] =  array($keys);
                    } else {
                        $groups[$key][] = $keys;
                    }
                }
                $newGroups = array();

                if(is_array($groups))
                {
                    foreach($groups as $cats => $values)
                    {

                        foreach($values as $itemValues){
                            $st = rtrim(trim($itemValues['smi_locationid']['!']));
                                $key = $st;
                                if (!isset($newGroups[$key])) 
                                {
                                    $newGroups[$key] = array($groups);

                                } else {
                                    $newGroups[$key][] = $itemValues;
                                }
                            }
                        }
                    }

Thanks!

Answer 1

Taking from Johan with a few modifications:

• avoid ltrim if already using trim
• put in a function, I can use temporary variables to maintain readability
• add a final [], to avoid nasty $name/$date collision, out of original request, but safer

function compactArray($data)
{
    $new_structure = array();
    foreach ( $data as $row ) 
      {
        $name = trim($row['smi_locationid']['!name']);
        $date = trim($row['smi_processingmonth']['!date']);
        $new_structure[ $name ][ $date ][] = $row;
    }
    return $new_structure;
}