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I’ve got an url http://www.example.com/?req=welcome.
To get the parameter req I use PHP like this:
echo $_GET['req'];
This will show the message in the body but this output should vanish after a second.
How do i do that?
You would use javascript.
You can see an example of that here, using jquery. It’s possible to do it without that framework (or any framework). .delay would be replaced by setTimeout() which would enclose your fade out function.