<?php $array = [ [ 'division' => 'Mymensingh', 'A' => 1 ], [ 'division' => 'Dhaka', 'A' => 5 ], [ 'division' => 'Mymensingh', 'B' => 2, 'C' => 5 ] ]; $result = []; foreach ($array as $row) { $result[$row['division']] = ($result[$row['division']] ?? []) + $row; } var_export(array_values($result));
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