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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 |
|---|---|
| 845 | |
| 846 | /** |
| 847 | * Filters the list of intermediate image sizes. |
| 848 | * |
| 849 | * @since 2.5.0 |
| 850 | * |
| 851 | * @param array $default_sizes An array of intermediate image sizes. Defaults |
| 852 | * are 'thumbnail', 'medium', 'medium_large', 'large'. |
| 853 | */ |
| 854 | return apply_filters( 'intermediate_image_sizes', $default_sizes ); |
| 855 | } |
| 856 | |
| 857 | /** |
| 858 | * Returns a normalized list of all currently registered image sub-sizes. |
| 859 | * |
| 860 | * @since 5.3.0 |
| 861 | * @uses wp_get_additional_image_sizes() |
| 862 | * @uses get_intermediate_image_sizes() |
| 863 | * |