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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 |
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591 |
|
592 | /** |
593 | * Fires after a user is logged out. |
594 | * |
595 | * @since 1.5.0 |
596 | * @since 5.5.0 Added the `$user_id` parameter. |
597 | * |
598 | * @param int $user_id ID of the user that was logged out. |
599 | */ |
600 | do_action( 'wp_logout', $user_id ); |
601 | } |
602 | endif; |
603 |
|
604 | if ( ! function_exists( 'wp_validate_auth_cookie' ) ) : |
605 | /** |
606 | * Validates authentication cookie. |
607 | * |
608 | * The checks include making sure that the authentication cookie is set and |
609 | * pulling in the contents (if $cookie is not used). |