Laravel Mysql批量插入

/**
     * 批量插入（如果数据已经存在，删除原数据）注意$dataList中必须包含PRIMARY KEY或一个UNIQUE索引
     * @param $dataList
     * @return bool
     */
    public function replace($dataList)
    {
        $keyList = array_keys(reset($dataList));
        $keyStr = implode(",", $keyList);
        $sql = "replace into " . $this->table . "($keyStr)" . " values";
        foreach ($dataList as $item) {
            $sql .= "('" . implode("','", array_values($item)) . "'),";
        }
        $sql = substr($sql, 0, -1);
        $res = DB::connection($this->connection)->insert($sql);

        return $res;
    }

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