[wp-trac] [WordPress Trac] #43046: `has_image_size()` returns false for Core image sizes

[WordPress Trac]

#43046: `has_image_size()` returns false for Core image sizes
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 Reporter:  desrosj       |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Media         |     Version:  3.9
 Severity:  minor         |  Resolution:
 Keywords:  has-patch     |     Focuses:
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Changes (by subrataemfluence):

 * keywords:  needs-patch => has-patch


Comment:

 `has_image_size()` function is specifically used for image sizes that are
 registered via `add_image_size()` function. It is actually using
 `wp_get_additional_image_sizes()` function, which does not consider core
 image sizes.

 On the other hand `get_intermediate_image_sizes()` uses the same function
 (`wp_get_additional_image_sizes()`) but it forcefully defines an array of
 core image sizes and merges it with the array returned by
 `wp_get_additional_image_sizes()` function.

 I agree with @desrosj that the documentation needs to be more clear about
 this at https://codex.wordpress.org/Function_Reference/has_image_size.

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Ticket URL: <https://core.trac.wordpress.org/ticket/43046#comment:1>
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