current domain in php

PHP
$url = 'http://google.com/dhasjkdas/sadsdds/sdda/sdads.html';
$parse = parse_url($url);
echo $parse['host']; // prints 'google.com'// Warning: This can be manipulated by hackers!
// If this is problematic, store the domain in a config file

$currentDomain = $_SERVER['SERVER_NAME'];
Source

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