(PHP 4 >= 4.3.0, PHP 5, PHP 7) Retrieve options for a stream/wrapper/context

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Attach a filter to a stream

(PHP 5 >= 5.3.0, PHP 7) Tells whether the stream supports locking.

(PHP 5, PHP 7) Retrieve list of registered streams

(PHP 4, PHP 5) Alias of

(PHP 5, PHP 7) Retrieve list of registered filters

(PHP 5 >= 5.3.0, PHP 7) Set the default stream context

(PHP 5, PHP 7) Create an Internet or Unix domain server socket

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Alias of

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Sets an option for a stream/wrapper/context