Page redirect after certain time PHP

There is a certain PHP function for redirecting after some time. I saw it somewhere but can't remember. It's like the gmail redirection after logging in. Please, could anyone remind me?

header( "refresh:5;url=wherever.php" );

this is the php way to set header which will redirect you to wherever.php in 5 seconds

Remember that header() must be called before any actual output is sent, either by normal HTML tags, blank lines in a file, or from PHP. It is a very common error to read code with include, or require, functions, or another file access function, and have spaces or empty lines that are output before header() is called. The same problem exists when using a single PHP/HTML file. (source php.net)

You can use javascript to redirect after some time

setTimeout(function () {
   window.location.href= 'http://www.google.com'; // the redirect goes here

},5000); // 5 seconds

You can try this:

header('Refresh: 10; URL=http://yoursite.com/page.php');

Where 10 is in seconds.

you would want to use php to write out a meta tag.

<meta http-equiv="refresh" content="5;url=http://www.yoursite.com">

It is not recommended but it is possible. The 5 in this example is the number of seconds before it refreshes.