1、系统变量方法
缺点不使用传递过来的地址和不支持系统变量的主机
- echo $_SERVER['HTTP_HOST'];
- $url = 'http://www.wdzzz.com/index.php?referer=wdzzz.com';
- $arr_url = parse_url($url);
- echo $arr_url['host'];
- function getdomain($url)
- {
- $url = str_replace('http://',”,$url); //如果有http前缀,则去掉
- $pos = strpos($url,'/');
- if($pos === false)
- {
- return $url;
- }else
- {
- return substr($url, 0, $pos);
- }
- }
- echo getdomain($url);
- preg_match("/^(http://)?([^/]+)/i", $url, $arr_domain);
- echo $arr_domain[2];
