(PHP 4, PHP 5, PHP 7) Open persistent Internet or Unix domain socket connection

(PECL ssh2 >= 0.10) List currently authorized publickeys

(PECL geoip >= 1.0.3) Get the two letter continent code

(PECL ssh2 >= 0.9.0) Request a file via SCP

(PHP 4 >= 4.0.4, PHP 5, PHP 7) ob_start callback function to gzip output buffer

(PHP 5, PHP 7) Fetches all the headers sent by the server in response to a HTTP request

(PHP 4 >= 4.3.0, PHP 5, PHP 7) List all output handlers in use

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Reads a maximum of length bytes from a socket

(PECL ssh2 >= 0.9.0) Remove a directory bool

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Closes a socket resource