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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 |
|---|---|
| 687 | |
| 688 | /** |
| 689 | * Fires once an authentication cookie has been validated. |
| 690 | * |
| 691 | * @since 2.7.0 |
| 692 | * |
| 693 | * @param array $cookie_elements An array of data for the authentication cookie. |
| 694 | * @param WP_User $user User object. |
| 695 | */ |
| 696 | do_action( 'auth_cookie_valid', $cookie_elements, $user ); |
| 697 | |
| 698 | return $user->ID; |
| 699 | } |
| 700 | endif; |
| 701 | |
| 702 | if ( ! function_exists( 'wp_generate_auth_cookie' ) ) : |
| 703 | /** |
| 704 | * Generates authentication cookie contents. |
| 705 | * |