[wp-trac] [WordPress Trac] #43979: PSR-4 Autoloader

[WordPress Trac]

#43979: PSR-4 Autoloader
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 Reporter:  alicewondermiscreations  |      Owner:  (none)
     Type:  feature request          |     Status:  new
 Priority:  normal                   |  Milestone:  Awaiting Review
Component:  General                  |    Version:  trunk
 Severity:  normal                   |   Keywords:
  Focuses:                           |
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 WordPress really needs a PSR-4 autoloader.

 With a PSR-4 autoloader, plugins and classes could require a namespaced
 class and it would load on demand.

 This would solve #43898 because what I want there can be solved with a
 class, in fact I'm doing that now on three blogs running it as an mu-
 plugin - but mu-plugins can't be updated automatically, they can only
 manually updated.

 Things like TGMPA that you find used in many plugins / themes could be
 loaded that way, instead of needing many copies in each plugin / theme
 that wants it.

 A PSR-4 autoloader would give a way that a plugin or theme could use a
 third party API without needing to bundle the API itself.

 I would suggest wp-content/wp-psr as the directory - with vendor/product
 directory structure inside, and PSR-4 class installer/updater similar to
 the plugin/theme installer/updater.

 Some things in core could even likely be moved into it.

 But anyway a PSR-4 autoloader would solve the issue of some things needing
 to be in mu-plugins for no other reasons than to make sure they are
 loaded, and could also be used to take some eye candy out of core that can
 be loaded that way.

 A PSR-4 autoloader would be a single file and could work with every
 version of PHP that still received security fixes from upstream PHP.

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Ticket URL: <https://core.trac.wordpress.org/ticket/43979>
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