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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 |
|---|---|
| 670 | |
| 671 | /** |
| 672 | * Filter the list of intermediate image sizes. |
| 673 | * |
| 674 | * @since 2.5.0 |
| 675 | * |
| 676 | * @param array $image_sizes An array of intermediate image sizes. Defaults |
| 677 | * are 'thumbnail', 'medium', 'large'. |
| 678 | */ |
| 679 | return apply_filters( 'intermediate_image_sizes', $image_sizes ); |
| 680 | } |
| 681 | |
| 682 | /** |
| 683 | * Retrieve an image to represent an attachment. |
| 684 | * |
| 685 | * A mime icon for files, thumbnail or intermediate size for images. |
| 686 | * |
| 687 | * @since 2.5.0 |
| 688 | * |