php开发,fopen(r+)报错
在新浪云端开发微信公众平台,想读取csv文件并写入数据,可是总提示无写入权限,如何修改云端的csv写权限,我在本地是可以添加写权限的,可是一上传到云端就报错,我是用php开发的,fopen(r+)报错
回复讨论(解决方案)
新浪云(包括所有的云)不能使用文件函数
必须使用他们提供的虚拟文件系统管理类
具体申请和使用请阅读他们的开发手册
其原因很简单:
由于访问量巨大,不是单台服务器所能承受的,必须使用负载均衡或服务器集群
于是你的网站不确定是从那台服务器上启动的,因此服务器上的文件系统就不能用了
必须做一个涵盖所有服务器的虚拟文件系统,来映射存放在实体机器上的文件

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