(PHP 4 >= 4.3.0, PHP 5, PHP 7) Reset URL rewriter values

(PECL geoip >= 1.0.4) Returns the region name for some country and region code combo

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Sends data to a connected socket

(PECL geoip >= 1.0.1) Determine if GeoIP Database is available

(PHP 5, PHP 7) Fetch DNS Resource Records associated with a hostname

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Write to a socket

(PHP 4, PHP 5, PHP 7) Turn implicit flush on/off

(PECL geoip >= 1.1.0) Get the second level domain name

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Creates a pair of indistinguishable sockets and stores them in an array

(PECL geoip >= 0.2.0) Get the country code and region