php - Put multiple arrays in one large associative array -

i creating set of arrays following loop:

$assessmentarr = explode("&", $assessmentdata);  foreach($assessmentarr $data) {     $fullarr = explode("_", $data);      // break down archetype , value     $resultarr = explode("=", $fullarr[2]);      //print_r($resultarr); } 

which produces following results:

array (     [0] => community-support     [1] => 24 ) array (     [0] => money-rewards     [1] => 30 ) array (     [0] => status-stability     [1] => 15 ) array (     [0] => personal-professional-development     [1] => 32 ) array (     [0] => community-support     [1] => 9 ) array (     [0] => money-rewards     [1] => 12 ) array (     [0] => status-stability     [1] => 16 ) array (     [0] => personal-professional-development     [1] => 29 ) 

i need combine these 1 array, , [0] value matches, need add [1] value together.

so final output like:

array (     [community-support] => 33     [money-rewards] => 42     [status-stability] => 31     [personal-professional-development] => 61 ) 

i found question: how merge 2 arrays summing merged values assist me in merging , adding values together, i'm not sure how go when arrays aren't assigned variable. trying possible or going wrong way?

don't make complicated, check if results array has element key , if not initialize otherwise add it. e.g.

(add code in loop):

if(!isset($result[$resultarr[0]]))     $result[$resultarr[0]] = $resultarr[1]; else     $result[$resultarr[0]] += $resultarr[1]; 

then have desired array:

print_r($result);