(PHP 5 >= 5.1.0, PHP 7) Converts a packed internet address to a human readable representation

(PHP 4, PHP 5, PHP 7) Flush system output buffer

(PHP 5 >= 5.4.0, PHP 7) Call a header function

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Receives data from a socket whether or not it is connection-oriented

(PHP 4, PHP 5, PHP 7) Checks if or where headers have been sent

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

(PECL geoip >= 1.0.1) Returns the filename of the corresponding GeoIP Database

(PHP 4, PHP 5, PHP 7) Flush (send) the output buffer and turn off output buffering

(PECL ssh2 >= 0.12) Changes file mode bool

(PECL ssh2 >= 0.9.0) Fetch an extended data stream