说好的header()前面不能有输出的呢？
看手册上说header()调用之前，前面不能有任何输出，但是我测试发现，完全可以有呀？我空了，还多，还是可以执行。那为什么最新版的手册一直都还没更新呢？http://www.php.net/manual/en/function.header.php
我是这样写的
<html>
111
<?php
/* This will give an error. Note the output
* above, which is before the header() call */
header('Location: http://www.example.com/');
exit;
?>
回复内容：
看手册上说header()调用之前，前面不能有任何输出，但是我测试发现，完全可以有呀？我空了，还多，还是可以执行。那为什么最新版的手册一直都还没更新呢？http://www.php.net/manual/en/function.header.php
我是这样写的
<html>
111
<?php
/* This will give an error. Note the output
* above, which is before the header() call */
header('Location: http://www.example.com/');
exit;
?>
你没碰上并不一定就是不存在，眼见不一定为实。
http://segmentfault.com/q/1010000000377390
赞楼上的，是因为缓冲区在脚本执行完才输出，此时你立刻刷新，必须出错。
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