Online PHP editor | refs for ZP0Zd

<?php $search = Array( 'RED' => Array ( 'AP' => 2 ), 'BLUE' => Array ( 'OR' => 5, 'GR' => 3, 'PL' => 2, 'BL' => 1 ), 'YELLOW' => Array ( 'LI' => 7, 'OR' => 4, 'GR' => 3, 'PL' => 4 ) ); $arr = array(); foreach ($search as $srch_val => $srch_row) { foreach ($srch_row as $key => $val) { if(array_key_exists($key, $arr)) { $arr[$key] = $arr[$key] + ($val); } else { $arr[$key] = ($val); } } } print_r($arr);