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<?php $fields = ['field1', 'field2']; $fields_position = [0, 3]; $row = [ 'John', 'Doe', '555 23 58 45', 'Evergreen Terrace' ]; foreach($fields as $field) { foreach($fields_position as $position) { $user_data[$field] = $row[$position]; } } var_dump($user_data);

preferences:
52.51 ms | 402 KiB | 5 Q