The filename being read.
You can use the optional second parameter and set it to
you want to search for the file in the include_path, too.
A context stream resource.
Returns the number of bytes read from the file. If an error
FALSE is returned and unless the function was called as
@readfile(), an error message is printed.
You can use a URL as a filename with this function if the fopen wrappers have been enabled. See fopen() for more details on how to specify the filename and Appendix O, List of Supported Protocols/Wrappers for a list of supported URL protocols.
Context support was added
with PHP 5.0.0. For a description of
contexts, refer to