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

(PECL ssh2 >= 0.9.0) Stat a symbolic link

(PECL ssh2 >= 0.9.0) Create a directory bool

(PECL geoip >= 1.0.4) Returns the time zone for some country and region code combo

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

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

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

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

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Return the nesting level of the output buffering mechanism

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Gets socket options for the socket