Warning_ Cannot modify header information - headers already sent by (output started at file_path_lin
更新日期:2024-10-10 18:44:15 来源:网络
"Warning: Cannot modify header information - headers already sent by (output started at file_path:line)"
- 原因:尝试修改HTTP头信息,但已有内容输出。
- 解决方法:确保在任何输出前设置HTTP头信息,检查是否有空白字符或注释提前输出。
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