(PHP >= 5.3.0)
gethostname — Gets the host name
gethostname() gets the standard host name for the local machine.
Returns a string with the hostname on success, otherwise FALSE is
returned.
Exemplo #1 A simple gethostname() example
<?php
echo gethostname(); // may output e.g,: sandie
// Or, an option that also works before PHP 5.3
echo php_uname('n'); // may output e.g,: sandie
?>