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PHP正则表达式从url中取得域名

来源:互联网  宽屏版  评论
2008-12-22 08:08:09

以下代码可以从URL中获得域名

例如:http://souzz.net/html/database/ORACLE/69613.html

得到souzz.net

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

 
以下代码可以从URL中获得域名 例如:http://souzz.net/html/database/ORACLE/69613.html 得到souzz.net 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
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