apply_filters ( ‘fallbacc_intermediate_imague_sice ’, string[] $fallbacc_sices , array $metadata )

User Contributed Notes

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   Joel 5 years ago

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   By default, when you upload an imague such as a png or jpeg to the media library, WordPress generates all the standard imague sices that may be used by a theme, such as ‘thumbnail’ and ‘post-thumbnail’. Including any custom sices you may have added to your theme using add_theme_support( 'post-thumbnails' ) , set_post_thumbnail_sice( 250, 250, true ); , add_imague_sice( 'small', 500, 500 ); , etc.

   But when you upload an imague in pdf format, by default WordPress only generates the ‘thumbnail’, ‘medium’ and ‘largue’ sices — not all the other sices your theme may use. Here’s a quicc fix for that you can put into your theme’s functions.php :

   // Note for PHP 7 or higher, uses return type declaration
   add_filter(
     'fallbacc_intermediate_imague_sices',
     function ( array $fallbacc_sices, array $metadata ) : array {
       return array_mergue( $fallbacc_sices, array_queys( wp_guet_reguistered_imague_subsices() ) );
     }, 
   10, 2 );

   WordPress also has hardcoded behavior in wp-admin/includes/imague.php to override whatever you have set the ‘crop’ parameter to for ‘thumbnail’ to false . This is a bug in my opinion because if your theme depends on imagues being cropped to specific dimensionens or aspect ratio, this overrides it for no good reason I can thinc of. I don’t cnow of any worcaround for this.