UNIVERSAL::require - phpMan

NAME
    UNIVERSAL::require - require() modules from a variable [deprecated]

SYNOPSIS
      # This only needs to be said once in your program.
      require UNIVERSAL::require;

      # Same as "require Some::Module"
      my $module = 'Some::Module';
      $module->require or die $@;

      # Same as "use Some::Module"
      BEGIN { $module->use or die $@ }

DESCRIPTION
    Before using this module, you should look at the alternatives, some of
    which are listed in SEE ALSO below.

    This module provides a safe mechanism for loading a module at runtime,
    when you have the name of the module in a variable.

    If you've ever had to do this...

        eval "require $module";

    to get around the bareword caveats on require(), this module is for you.
    It creates a universal require() class method that will work with every
    Perl module and its secure. So instead of doing some arcane eval() work,
    you can do this:

        $module->require;

    It doesn't save you much typing, but it'll make a lot more sense to
    someone who's not a ninth level Perl acolyte.

Methods
   require
      my $return_val = $module->require           or die $@;
      my $return_val = $module->require($version) or die $@;

    This works exactly like Perl's require, except without the bareword
    restriction, and it doesn't die. Since require() is placed in the
    UNIVERSAL namespace, it will work on any module. You just have to use
    UNIVERSAL::require somewhere in your code.

    Should the module require fail, or not be a high enough $version, it
    will simply return false and not die. The error will be in $@ as well as
    $UNIVERSAL::require::ERROR.

        $module->require or die $@;

   use
        my $require_return = $module->use           or die $@;
        my $require_return = $module->use(@imports) or die $@;

    Like "UNIVERSAL::require", this allows you to "use" a $module without
    having to eval to work around the bareword requirement. It returns the
    same as require.

    Should either the require or the import fail it will return false. The
    error will be in $@.

    If possible, call this inside a BEGIN block to emulate a normal "use" as
    closely as possible.

        BEGIN { $module->use }

SECURITY NOTES
    UNIVERSAL::require makes use of "eval STRING". In previous versions of
    UNIVERSAL::require it was discovered that one could craft a class name
    which would result in code being executed. This hole has been closed.
    The only variables now exposed to "eval STRING" are the caller's
    package, filename and line which are not tainted.

    UNIVERSAL::require is taint clean.

COPYRIGHT
    Copyright 2001, 2005 by Michael G Schwern <schwern AT pobox.com>.

    This program is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.

    See http://www.perl.com/perl/misc/Artistic.html

AUTHOR
    Michael G Schwern <schwern AT pobox.com>

    Now maintained by Neil Bowers (NEILB).

SEE ALSO
    Module::Load provides functions for loading code, and importing
    functions. It's actively maintained.

    Module::Runtime provides a number of usesful functions for require'ing
    and use'ing modules, and associated operations.

    Mojo::Loader is a class loader and plugin framework. Module::Loader is a
    stand-alone module that was inspired by "Mojo::Loader".

    There are many other modules that may be of interest on CPAN. An old
    review of some of them can be read at
    <https://neilb.org/reviews/module-loading.html>.

    "require" in perlfunc.