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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 |
---|---|
4804 | /** |
4805 | * Fires when a post is transitioned from one status to another. |
4806 | * |
4807 | * @since 2.3.0 |
4808 | * |
4809 | * @param string $new_status New post status. |
4810 | * @param string $old_status Old post status. |
4811 | * @param WP_Post $post Post object. |
4812 | */ |
4813 | do_action( 'transition_post_status', $new_status, $old_status, $post ); |
4814 |
|
4815 | /** |
4816 | * Fires when a post is transitioned from one status to another. |
4817 | * |
4818 | * The dynamic portions of the hook name, `$new_status` and `$old status`, |
4819 | * refer to the old and new post statuses, respectively. |
4820 | * |
4821 | * @since 2.3.0 |
4822 | * |