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<?php $array_2 = [ [ 1, 2, 7 ], [ 4, 5, 6 ] ]; $tot = 0; foreach($array_2 as $value){ $tot +=array_sum($value); } echo $tot;
Output for 7.1.25 - 7.1.30, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
25

preferences:
174.43 ms | 403 KiB | 170 Q