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

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

(PECL geoip >= 0.2.0) Get the organization name

(PECL geoip >= 0.2.0) Get the three letter country code

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Return the length of the output buffer

(PHP 4, PHP 5, PHP 7) Decode URL-encoded strings

(PECL ssh2 >= 0.9.0) Authenticate as "none"

(PHP 4, PHP 5, PHP 7) Checks if or where headers have been sent

(PHP >= 5.3.0) Gets the host name string gethostname

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Receives data from a socket whether or not it is connection-oriented