Online PHP editor | output for Z6Bhv

<?php $res1 = [ ['ID' => 60,'TOTAL' => 500], ['ID' => 61,'TOTAL' => 600], ['ID' => 63,'TOTAL' => 500] ]; $res2 = [ ['ID' => 60,'TOTAL' => 600], ['ID' => 61,'TOTAL' => 700], ['ID' => 64,'TOTAL' => 800] ]; $results = array(); foreach( array_merge( $res1, $res2) as $r ) { if( !isset ( $results [ $r['ID'] ] ) ) { $results[ $r['ID'] ] = 0; } $results[ $r['ID'] ] += $r['TOTAL']; } $reformatResults = array(); foreach( $results as $key => $total ) { $reformatResults[$key] = $total; } echo '<pre>'; print_r($reformatResults);