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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 |
---|---|
3506 | /** |
3507 | * Fires once an existing post has been updated. |
3508 | * |
3509 | * @since 3.0.0 |
3510 | * |
3511 | * @param int $post_ID Post ID. |
3512 | * @param WP_Post $post_after Post object following the update. |
3513 | * @param WP_Post $post_before Post object before the update. |
3514 | */ |
3515 | do_action( 'post_updated', $post_ID, $post_after, $post_before); |
3516 | } |
3517 |
|
3518 | /** |
3519 | * Fires once a post has been saved. |
3520 | * |
3521 | * The dynamic portion of the hook name, `$post->post_type`, refers to |
3522 | * the post type slug. |
3523 | * |
3524 | * @since 3.7.0 |