Get the second level domain name

# geoip_domain_by_name

(PECL geoip >= 1.1.0)

geoip_domain_by_name — Get the second level domain name

### 説明

geoip_domain_by_name ( string `$hostname` ) : string

The geoip_domain_by_name() function will return the second level domain names associated with a hostname or an IP address.

This function is currently only available to users who have bought a commercial GeoIP Domain Edition. A warning will be issued if the proper database cannot be located.

### パラメータ

`hostname`

  The hostname or IP address.

### 返り値

Returns the domain name on success, or `FALSE` if the address cannot be found in the database.

### 例

例1 A geoip_domain_by_name() example

This will output the domain associated with IP 61.106.139.1.

`<?php
$domain = geoip_domain_by_name('61.106.139.1');
if ($domain) {
echo 'The domain is: '. $domain;
}
?>`

上の例の出力は以下となります。

    The domain is: von.co.kr