Why does $_SERVER["SERVER_NAME"] not echo the www in www.example.com but it does work when I echo it from a sub domain like test.example.com?
Why does $_SERVER[SERVER_NAME] not echo the www in www.example.com but it does work when
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Why does $_SERVER["SERVER_NAME"] not echo the www in www.example.com but it does work when I echo it from a sub domain like test.example.com?
I don’t know why it doesn’t contain the expected value. But try
$_SERVER['HTTP_HOST']instead, that contains the value provided by the client in the HTTP header field Host. But see Chris Shiftlett’sSERVER_NAMEVersusHTTP_HOSTfor security considerations.