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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 |
---|---|
4926 | * |
4927 | * Therefore, if you are looking to only fire a callback when a post is first |
4928 | * transitioned to a status, use the {@see 'transition_post_status'} hook instead. |
4929 | * |
4930 | * @since 2.3.0 |
4931 | * |
4932 | * @param int $post_id Post ID. |
4933 | * @param WP_Post $post Post object. |
4934 | */ |
4935 | do_action( "{$new_status}_{$post->post_type}", $post->ID, $post ); |
4936 | } |
4937 |
|
4938 | /** |
4939 | * Fires actions after a post, its terms and meta data has been saved. |
4940 | * |
4941 | * @since 5.6.0 |
4942 | * |
4943 | * @param int|WP_Post $post The post ID or object that has been saved. |
4944 | * @param bool $update Whether this is an existing post being updated. |