(PHP 4 >= 4.3.2, PHP 5, PHP 7) Retrieve the current position of a stream

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

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

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

(PHP 5, PHP 7) Called when applying the filter

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Close directory handle

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

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Retrieve information about a file resource

(PHP 4, PHP 5) Alias of

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