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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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642 | * Fires after the user's role has changed. |
643 | * |
644 | * @since 2.9.0 |
645 | * @since 3.6.0 Added $old_roles to include an array of the user's previous roles. |
646 | * |
647 | * @param int $user_id The user ID. |
648 | * @param string $role The new role. |
649 | * @param string[] $old_roles An array of the user's previous roles. |
650 | */ |
651 | do_action( 'set_user_role', $this->ID, $role, $old_roles ); |
652 | } |
653 |
|
654 | /** |
655 | * Chooses the maximum level the user has. |
656 | * |
657 | * Will compare the level from the $item parameter against the $max |
658 | * parameter. If the item is incorrect, then just the $max parameter value |
659 | * will be returned. |
660 | * |