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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 |
---|---|
8048 |
|
8049 | /** |
8050 | * Filters the URL to the original attachment image. |
8051 | * |
8052 | * @since 5.3.0 |
8053 | * |
8054 | * @param string $original_image_url URL to original image. |
8055 | * @param int $attachment_id Attachment ID. |
8056 | */ |
8057 | return apply_filters( 'wp_get_original_image_url', $original_image_url, $attachment_id ); |
8058 | } |
8059 |
|
8060 | /** |
8061 | * Filters callback which sets the status of an untrashed post to its previous status. |
8062 | * |
8063 | * This can be used as a callback on the `wp_untrash_post_status` filter. |
8064 | * |
8065 | * @since 5.6.0 |
8066 | * |