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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 |
---|---|
8030 |
|
8031 | /** |
8032 | * Filters the URL to the original attachment image. |
8033 | * |
8034 | * @since 5.3.0 |
8035 | * |
8036 | * @param string $original_image_url URL to original image. |
8037 | * @param int $attachment_id Attachment ID. |
8038 | */ |
8039 | return apply_filters( 'wp_get_original_image_url', $original_image_url, $attachment_id ); |
8040 | } |
8041 |
|
8042 | /** |
8043 | * Filters callback which sets the status of an untrashed post to its previous status. |
8044 | * |
8045 | * This can be used as a callback on the `wp_untrash_post_status` filter. |
8046 | * |
8047 | * @since 5.6.0 |
8048 | * |