PHP regular expression to get domain name from url_PHP tutorial

以下代码可以从URL中获得域名

例如:http://bkjia.com/live/q.html

得到bkjia.com

以下为引用的内容：

以下为引用的内容：
function get_domain($url){
$pattern = "/[w-]+.(com|net|org|gov|cc|biz|info|cn)(.(cn|hk))*/";
preg_match($pattern, $url, $matches);
if(count($matches) > 0) {
return $matches[0];
}else{
$rs = parse_url($url);
$main_url = $rs["host"];
if(!strcmp(long2ip(sprintf("%u",ip2long($main_url))),$main_url)) {
return $main_url;
}else{
$arr = explode(".",$main_url);
$count=count($arr);
$endArr = array("com","net","org","3322");//com.cn net.cn 等情况
if (in_array($arr[$count-2],$endArr)){
$domain = $arr[$count-3].".".$arr[$count-2].".".$arr[$count-1];
}else{
$domain = $arr[$count-2].".".$arr[$count-1];
}
return $domain;
}// end if(!strcmp...)
}// end if(count...)
}// end function

function get_domain($url){ $pattern = "/[w-]+.(com|net|org|gov|cc|biz|info|cn)(.(cn|hk))*/";

preg_match($pattern, $url, $matches);

if(count($matches) > 0) { return $matches[0]; }else{ $rs = parse_url($url); $main_url = $rs["host"]; if(!strcmp(long2ip(sprintf("%u",ip2long($main_url))),$main_url)) { return $main_url; }else{ $arr = explode(".",$main_url); $count=count($arr); $endArr = array("com","net","org","3322");//com.cn net.cn 等情况 if (in_array($arr[$count-2],$endArr)){ $domain = $arr[$count-3].".".$arr[$count-2].".".$arr[$count-1];

}else{ $domain = $arr[$count-2].".".$arr[$count-1]; }

return $domain;

}// end if(!strcmp...) }// end if(count...) }// end function

http://www.bkjia.com/PHPjc/363986.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/363986.htmlTechArticle以下代码可以从URL中获得域名 例如:http://liehuo.net/live/q.html 得到liehuo.net 以下为引用的内容： function get_domain($url){ $pattern = /[w-]+.(com|net|org...