string(257) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E4%B9%88%E6%8A%8A%E4%BC%98%E6%83%A0%E5%88%B8%E6%8E%A8%E5%B9%BF%E5%87%BA%E5%8E%BB => Failed to connect to 101.91.112.32 port 38195: Connection refused"
怎么把优惠券推广出去
