[wp-trac] [WordPress Trac] #45203: Document all optional parameters as optional in add_image_size()

[WordPress Trac]

#45203: Document all optional parameters as optional in add_image_size()
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 Reporter:  DrewAPicture                     |       Owner:  andrewza
     Type:  defect (bug)                     |      Status:  assigned
 Priority:  normal                           |   Milestone:  5.1
Component:  Media                            |     Version:
 Severity:  normal                           |  Resolution:
 Keywords:  good-first-bug has-patch commit  |     Focuses:  docs
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Comment (by pento):

 In [changeset:"43893" 43893]:
 {{{
 #!CommitTicketReference repository="" revision="43893"
 Scripts: Fix a PHP error in admin-ajax calls.

 When making an ajax request,
 `wp_enqueue_registered_block_scripts_and_styles()` checked if `is_admin()`
 was true before accessing `$current_screen`, rather than checking if
 `$current_screen` was defined. This is usually fine, execept for in ajax
 requests.

 Props ocean90, foreverpinetree, pento.
 See #45203.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/45203#comment:6>
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