File: wp-includes/class-wp-user.php. View all references

public function set_role( $role ) {
	if ( 1 === count( $this->roles ) && current( $this->roles ) === $role ) {
		return;
	}

	foreach ( (array) $this->roles as $oldrole ) {
		unset( $this->caps[ $oldrole ] );
	}

	$old_roles = $this->roles;

	if ( ! empty( $role ) ) {
		$this->caps[ $role ] = true;
		$this->roles         = array( $role => true );
	} else {
		$this->roles = array();
	}

	update_user_meta( $this->ID, $this->cap_key, $this->caps );
	$this->get_role_caps();
	$this->update_user_level_from_caps();

	foreach ( $old_roles as $old_role ) {
		if ( ! $old_role || $old_role === $role ) {
			continue;
		}

		/** This action is documented in wp-includes/class-wp-user.php */
		do_action( 'remove_user_role', $this->ID, $old_role );
	}

	if ( $role && ! in_array( $role, $old_roles, true ) ) {
		/** This action is documented in wp-includes/class-wp-user.php */
		do_action( 'add_user_role', $this->ID, $role );
	}

	/**
	 * Fires after the user's role has changed.
	 *
	 * @since 2.9.0
	 * @since 3.6.0 Added $old_roles to include an array of the user's previous roles.
	 *
	 * @param int      $user_id   The user ID.
	 * @param string   $role      The new role.
	 * @param string[] $old_roles An array of the user's previous roles.
	 */
	do_action( 'set_user_role', $this->ID, $role, $old_roles );
}

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