(PHP 4 >= 4.1.0, PHP 5, PHP 7) Queries the remote side of the given socket which may either result in host/port

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

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Flush the output buffer, return it as a string and turn off output buffering

(PHP 4, PHP 5, PHP 7) Get a list of IPv4 addresses corresponding to a given Internet host name

(PHP 4, PHP 5, PHP 7) Generate a system log message

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

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

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

(PHP 5, PHP 7) Returns a list of response headers sent (or ready to send)

(PECL ssh2 >= 0.9.0) Create a symlink bool