(PHP 5, PHP 7) Advisory file locking public bool

(PHP 5 >= 5.4.0, PHP 7) Truncate stream public

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Close a resource

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Opens file or URL

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Read from stream

(PHP 5, PHP 7) Delete a file public bool streamWrapper::unlink

(PHP 5 >= 5.3.0, PHP 7) Retrieve the underlaying resource

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Tests for end-of-file on a file pointer

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Seeks to specific location in a stream

(PHP 5 >= 5.4.0, PHP 7) Change stream options