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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 |
|---|---|
| 667 | |
| 668 | /** |
| 669 | * Fires after a user is logged out. |
| 670 | * |
| 671 | * @since 1.5.0 |
| 672 | * @since 5.5.0 Added the `$user_id` parameter. |
| 673 | * |
| 674 | * @param int $user_id ID of the user that was logged out. |
| 675 | */ |
| 676 | do_action( 'wp_logout', $user_id ); |
| 677 | } |
| 678 | endif; |
| 679 | |
| 680 | if ( ! function_exists( 'wp_validate_auth_cookie' ) ) : |
| 681 | /** |
| 682 | * Validates authentication cookie. |
| 683 | * |
| 684 | * The checks include making sure that the authentication cookie is set and |
| 685 | * pulling in the contents (if $cookie is not used). |