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<?php $array = [ 1 => [ 'A' => ['AA' => 3, 'AB' => 5], 'B' => ['BA' => 2] ], 2 => [ 'C' => ['CA' => 4], 'D' => ['DA' => 1, 'DB' => 2] ], 3 => [ 'E' => ['EA' => 1, 'EB' => 2, 'EC' => 3], 'F' => ['FA' => 0, 'FB' => 7, 'FC' => 7] ] ]; var_export( array_map( fn($set) => array_sum( array_map(array_sum(...), $set) ), $array ) );
Output for 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
array ( 1 => 10, 2 => 7, 3 => 20, )
preferences:
51.82 ms | 866 KiB | 4 Q