作业帮session_start() [function.session-start]:Cannot send session cookie - headers already sent bysession_start() [function.session-start]:Cannot send session cache limiter - headers already sentsession_start() 我开启了的.session在项目里面却没
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![session_start() [function.session-start]:Cannot send session cookie - headers already sent bysession_start() [function.session-start]:Cannot send session cache limiter - headers already sentsession_start() 我开启了的.session在项目里面却没](/uploads/image/z/13896085-13-5.jpg?t=session_start%28%29+%5Bfunction.session-start%5D%3ACannot+send+session+cookie+-+headers+already+sent+bysession_start%28%29+%5Bfunction.session-start%5D%3ACannot+send+session+cache+limiter+-+headers+already+sentsession_start%28%29+%E6%88%91%E5%BC%80%E5%90%AF%E4%BA%86%E7%9A%84.session%E5%9C%A8%E9%A1%B9%E7%9B%AE%E9%87%8C%E9%9D%A2%E5%8D%B4%E6%B2%A1)
session_start() [function.session-start]:Cannot send session cookie - headers already sent bysession_start() [function.session-start]:Cannot send session cache limiter - headers already sentsession_start() 我开启了的.session在项目里面却没
session_start() [function.session-start]:Cannot send session cookie - headers already sent by
session_start() [function.session-start]:Cannot send session cache limiter - headers already sent
session_start() 我开启了的.session在项目里面却没用,为什么?
session_start() [function.session-start]:Cannot send session cookie - headers already sent bysession_start() [function.session-start]:Cannot send session cache limiter - headers already sentsession_start() 我开启了的.session在项目里面却没
错误提示
Warning: Cannot send session cache limiter - headers already sent
分析及解决办法
这一类问题,的原因是你在程序中使用session_start()时,之前已经有实际的html内容输出了.或许你说,我没有啊,我只不过是echo或
print一条消息了.很抱歉,你的echo或print语句所产生的输出,就是实际的html内容输出.解决此类问题的办法是,将你的
session_start()调到程序的第一行.