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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 |
|---|---|
| 643 | |
| 644 | /** |
| 645 | * Filter the list of intermediate image sizes. |
| 646 | * |
| 647 | * @since 2.5.0 |
| 648 | * |
| 649 | * @param array $image_sizes An array of intermediate image sizes. Defaults |
| 650 | * are 'thumbnail', 'medium', 'large'. |
| 651 | */ |
| 652 | return apply_filters( 'intermediate_image_sizes', $image_sizes ); |
| 653 | } |
| 654 | |
| 655 | /** |
| 656 | * Retrieve an image to represent an attachment. |
| 657 | * |
| 658 | * A mime icon for files, thumbnail or intermediate size for images. |
| 659 | * |
| 660 | * @since 2.5.0 |
| 661 | * |