php 报错 Cannot modify header information，modifyheader
- WBOYOriginal
- 2016-06-13 09:11:491027browse
php 报错 Cannot modify header information，modifyheader
在用CI 开发微信公众号的时候出现下面这么个问题，网上看了一圈解决办法是：把报错的文件用editplus另存为utf-8。
Severity: Warning
Message: Cannot modify header information - headers already sent by (output started at Filename: libraries/Session.php
Line Number: 688
因为每个页面都报上面的错，所以我估计是CI根目录下的index.php有问题，用上面的办法将index.php另存为utf-8，问题解决。
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