# phpman > man > IO(3pm)

## NAME
    IO - load various IO modules

## SYNOPSIS
       use IO qw(Handle File); # loads IO modules, here [IO::Handle](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3AHandle/markdown), [IO::File](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3AFile/markdown)
       use IO;                 # DEPRECATED

## DESCRIPTION
    "IO" provides a simple mechanism to load several of the IO modules in one go. The IO modules
    belonging to the core are:

          [IO::Handle](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3AHandle/markdown)
          [IO::Seekable](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3ASeekable/markdown)
          [IO::File](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3AFile/markdown)
          [IO::Pipe](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3APipe/markdown)
          [IO::Socket](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3ASocket/markdown)
          [IO::Dir](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3ADir/markdown)
          [IO::Select](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3ASelect/markdown)
          [IO::Poll](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3APoll/markdown)

    Some other IO modules don't belong to the perl core but can be loaded as well if they have been
    installed from CPAN. You can discover which ones exist with this query:
    <<https://metacpan.org/search?q=IO%3A%3A>>.

    For more information on any of these modules, please see its respective documentation.

## DEPRECATED
        use IO;                # loads all the modules listed below

    The loaded modules are [IO::Handle](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3AHandle/markdown), [IO::Seekable](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3ASeekable/markdown), [IO::File](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3AFile/markdown), [IO::Pipe](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3APipe/markdown), [IO::Socket](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3ASocket/markdown), [IO::Dir](https://www.chedong.com/phpMan.php/perldoc/IO%3A%3ADir/markdown). You
    should instead explicitly import the IO modules you want.