(PHP 4, PHP 5, PHP 7) Check DNS records corresponding to a given Internet host name or IP address

(PHP 4, PHP 5, PHP 7) Get the IPv4 address corresponding to a given Internet host name

(PECL geoip >= 1.1.0) Set a custom directory for the GeoIP database.

(PECL ssh2 >= 0.12) Authenticate over SSH using the ssh agent

(PHP 4, PHP 5, PHP 7) Return the contents of the output buffer

(PHP 5, PHP 7) Alias of

(PECL ssh2 >= 0.9.0) Delete a file bool ssh2_sftp_unlink

(PECL geoip >= 1.1.0) Get the Autonomous System Numbers (ASN)

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Runs the select() system call on the given arrays of sockets with a specified

(PECL ssh2 >= 0.9.0) Initialize SFTP subsystem