$arr = array(    array('id' => 122, 'name' => '张三', 'amount' => '1'),    array('id' => 123, 'name' => '李四', 'amount' => '1'),    array('id' => 124, 'name' => '王五', 'amount' => '1'),    array('id' => 125, 'name' => '赵六', 'amount' => '1'),    array('id' => 126, 'name' => '赵六', 'amount' => '2'),    array('id' => 126, 'name' => '赵六', 'amount' => '2'));$new = array();foreach($arr as $row){    if(isset($new[$row['name']])){        $new[$row['name']]['amount'] += $row['amount'];    }else{        $new[$row['name']] = $row;    }}var_dump($new);