<?php $array = [ ['user_id' => 82, 'ac_type' => 1], ['user_id' => 80, 'ac_type' => 5], ['user_id' => 76, 'ac_type' => 1], ['user_id' => 82, 'ac_type' => 2], ['user_id' => 80, 'ac_type' => 6] ]; $result = []; foreach (array_reverse($array) as $row) { $result[$row['user_id']] = $row; } var_export(array_values($result));
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