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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 |
---|---|
731 |
|
732 | /** |
733 | * Fires once an authentication cookie has been validated. |
734 | * |
735 | * @since 2.7.0 |
736 | * |
737 | * @param array $cookie_elements An array of data for the authentication cookie. |
738 | * @param WP_User $user User object. |
739 | */ |
740 | do_action( 'auth_cookie_valid', $cookie_elements, $user ); |
741 |
|
742 | return $user->ID; |
743 | } |
744 | endif; |
745 |
|
746 | if ( !function_exists('wp_generate_auth_cookie') ) : |
747 | /** |
748 | * Generate authentication cookie contents. |
749 | * |