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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 |
|---|---|
| 694 | // Quick check to see if an honest cookie has expired. |
| 695 | if ( $expired < time() ) { |
| 696 | /** |
| 697 | * Fires once an authentication cookie has expired. |
| 698 | * |
| 699 | * @since 2.7.0 |
| 700 | * |
| 701 | * @param string[] $cookie_elements An array of data for the authentication cookie. |
| 702 | */ |
| 703 | do_action( 'auth_cookie_expired', $cookie_elements ); |
| 704 | return false; |
| 705 | } |
| 706 | |
| 707 | $user = get_user_by( 'login', $username ); |
| 708 | if ( ! $user ) { |
| 709 | /** |
| 710 | * Fires if a bad username is entered in the user authentication process. |
| 711 | * |
| 712 | * @since 2.7.0 |