Warning:session_start():Cannotsendsession_PHP教程

Warning: session_start(): Cannot send session cache limiter

echo "Homen
";
session_start();

Warning: session_start(): Cannot send session cache limiter

想知道为什么session_start();加一句就会出现警告消息

session_start(): 放在文件开始 试试

Note: If you are using cookie-based sessions, you must call session_start() before anything is outputted to the browser.

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