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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 |
---|---|
5005 | /** |
5006 | * Fires when a post is transitioned from one status to another. |
5007 | * |
5008 | * @since 2.3.0 |
5009 | * |
5010 | * @param string $new_status New post status. |
5011 | * @param string $old_status Old post status. |
5012 | * @param WP_Post $post Post object. |
5013 | */ |
5014 | do_action( 'transition_post_status', $new_status, $old_status, $post ); |
5015 |
|
5016 | /** |
5017 | * Fires when a post is transitioned from one status to another. |
5018 | * |
5019 | * The dynamic portions of the hook name, `$new_status` and `$old_status`, |
5020 | * refer to the old and new post statuses, respectively. |
5021 | * |
5022 | * @since 2.3.0 |
5023 | * |