Warning: Cannot modify header information - headers already sent by
如果在执行php程序时看到这条警告:"Warning: Cannot modify header information - headers already sent by ....".
有以下几种解决方法:
1. Blank lines (空白行):
,检查 后面没有空白行,特别是include或者require的文件.不少问题是这些空白行导致的。
2. Use exit statement (用exit来解决):在header后加上exit();
header ("Location: xxx");exit();
3.用Javascrīpt来解决:
self.location( file.php );"; ?>
可以用Javascrīpt来代替header。另外需要注意,采用这种方法需要浏览器支持Javascrīpt.
4. 用输出缓存来解决:
<?php ... HTML codes ... ... PHP codes ... header ("Location: ...."); ob_end_flush(); ?>
永久地址:
转载随意~请带上教程地址吧^^

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