(PHP 4 >= 4.1.0, PHP 5, PHP 7) Opens a socket on port to accept connections

(PHP 5 >= 5.3.0, PHP 7) Remove previously set headers

(PHP 4, PHP 5, PHP 7) Send a cookie bool setcookie

(PECL geoip >= 0.2.0) Get the organization name

(PHP 5, PHP 7) Alias of

(PHP 4, PHP 5, PHP 7) Alias of

(PHP 5 >= 5.4.0, PHP 7) Call a header function

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Get status of output buffers

(PHP 4, PHP 5, PHP 7) Flush system output buffer

(PECL geoip >= 1.0.1) Returns the filename of the corresponding GeoIP Database