Question

i have multidimension array

$a = "5,add|4,edit|6,add|6,edit|19,add|19,delete|19,view";

then i explode $a

$array_a = explode("|", $a);

//loop

for($i=0;$i<=count($arr_a)-1;$i++){

    arr_b = explode(",", $arr_a[$i]);

    foreach($arr_b as $id => $access){
        echo $id." have access ".$access;
    }
}

//result 
0 have access 5
1 have access add
0 have access 4
1 have access edit
0 have access 6
1 have access add
0 have access 6
1 have access edit
0 have access 19
1 have access add
0 have access 19
1 have access delete
0 have access 19
1 have access view
//-end result

the problem is :

how i can make the result like this

5 have access add
4 have access edit
6 have access add,edit
19 have access add,delete,view

Answer 1

Try this one (tested):

// intial data
$strAccess = "5,add|4,edit|6,add|6,edit|19,add|19,delete|19,view";

// build access array
$arrayAccess = array();

$tmpList = explode('|', $strAccess);

foreach($tmpList as $access)
{
  list($idUser, $right) = explode(',', $access);

  if (!isset($arrayAccess[$idUser]))
    $arrayAccess[$idUser] = array();

  $arrayAccess[$idUser][] = $right;
}

// print it out
foreach($arrayAccess as $idUser => $accessList)
  echo $idUser." has access ".implode(",", $accessList)."\n";