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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
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882 |
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883 | /** |
884 | * Filters the list of intermediate image sizes. |
885 | * |
886 | * @since 2.5.0 |
887 | * |
888 | * @param string[] $default_sizes An array of intermediate image size names. Defaults |
889 | * are 'thumbnail', 'medium', 'medium_large', 'large'. |
890 | */ |
891 | return apply_filters( 'intermediate_image_sizes', $default_sizes ); |
892 | } |
893 |
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894 | /** |
895 | * Returns a normalized list of all currently registered image sub-sizes. |
896 | * |
897 | * @since 5.3.0 |
898 | * @uses wp_get_additional_image_sizes() |
899 | * @uses get_intermediate_image_sizes() |
900 | * |