(PHP 4, PHP 5, PHP 7) Extracts all meta tag content attributes from a file and returns an array

(PECL ssh2 >= 0.10) Add an authorized publickey

(PECL ssh2 >= 0.9.0) Authenticate using a public hostkey

(PHP 4, PHP 5, PHP 7) Get port number associated with an Internet service and protocol

(PECL geoip >= 0.2.0) Get GeoIP Database information

(PHP 4, PHP 5, PHP 7) URL-encodes string string

(PHP 4, PHP 5, PHP 7) Get MX records corresponding to a given Internet host name

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Sets blocking mode on a socket resource

(PHP 4, PHP 5, PHP 7) URL-encode according to RFC 3986

(PHP 5 >= 5.5.0, PHP 7) Send a message int