Cannot modify header information - headers already sent by

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阿里云服务器出现Warning: Cannot modify header information - headers already sent by (output started at 问题的解决方法

阿里云服务器出现Warning: Cannot modify header information - headers already sent by (output started at 问题的解决方法: 首先查看header("Content-type:text/html;charset=utf-8");前面是否有输出或空格,这个前面是不能有空格和输出的, 如果没有空格和输出仍出现这种情况,可以去改php.ini配置文件. 主机管理平台>高级环境设置>PHP.ini设置…

php有些系统会报错或提示 Cannot modify header information - headers already sent by

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PHP错误Warning: Cannot modify header information - headers already sent by解决方法

这篇文章主要介绍了PHP错误Warning: Cannot modify header information - headers already sent by解决方法,需要的朋友可以参考下今天在测试以下代码时遇到该错误: 复制代码代码如下: session_start();$_SESSION['username']=$username;echo "<script language='javascript'>location.href='../admin.php';</sc…

Warning: Cannot modify header information - headers already sent by (output started at

一般来说在header函数前不能输出html内容,类似的还有setcookie() 和 session 函数,这些函数需要在输出流中增加消息头部信息.如果在header()执行之前有echo等语句,当后面遇到header()时,就会报出 “Warning: Cannot modify header information - headers already sent by ....”错误.就是说在这些函数的前面不能有任何文字.空行.回车等,而且最好在header()函数后加上exit()函数.例…

PHP：Cannot modify header information - headers already sent by错误的解决方案

<?php ob_start();setcookie("username","test",time()+3600);echo "the username is:".$HTTP_COOKIE_VARS["username"]."\n";echo "the username is:".$_COOKIE["username"]."\n";print…

Warning: Cannot modify header information - headers already sent by ... functions_general.php on line 45

摘自:有用到 http://blog.csdn.net/besily/article/details/5396268 PHP错误:Warning: Cannot modify header information - headers already sent by ... 2010-03-19 14:08 9779人阅读评论(3) 收藏举报如果在执行php程序时看到这条警告:"Warning: Cannot modify header information - headers alrea…

php5.6,Ajax报错，Warning: Cannot modify header information - headers already sent in Unknown on line 0

php5.6ajax报错 Deprecated: Automatically populating $HTTP_RAW_POST_DATA is deprecated and will be removed in a future version. To avoid this warning set 'always_populate_raw_post_data' to '-1' in php.ini and use the php://input stream instead. in Unkno…