[wp-trac] [WordPress Trac] #43741: Improve media_sideload_image() image extensions detection

[WordPress Trac]

#43741: Improve media_sideload_image() image extensions detection
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 Reporter:  Karzin       |       Owner:  (none)
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Awaiting Review
Component:  Media        |     Version:  4.9.5
 Severity:  normal       |  Resolution:
 Keywords:               |     Focuses:
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Comment (by soulseekah):

 Hey, welcome to Trac! :)

 `image_type_to_extension` and `exif_imagetype` require extra PHP libraries
 to be available (GD and Exif extensions respectively).

 There's core's `wp_get_image_mime` which may be useful instead? It uses
 the same functions mostly, but provides graceful fallback.

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Ticket URL: <https://core.trac.wordpress.org/ticket/43741#comment:1>
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