Step.php

См. документацию.

<?php
namespace Bitrix\Seo\Sitemap\Type;
 
class Step
{
    public const STEP_INIT = 'init';
    public const STEP_FILES = 'files';
    public const STEP_IBLOCK_INDEX = 'iblock_index';
    public const STEP_IBLOCK = 'iblock';
    public const STEP_FORUM_INDEX = 'forum_index';
    public const STEP_FORUM = 'forum';
    public const STEP_INDEX = 'index';
 
    public const STEPS = [
        self::STEP_INIT => 0,
        self::STEP_FILES => 10,
        self::STEP_IBLOCK_INDEX => 20,
        self::STEP_IBLOCK => 40,
        self::STEP_FORUM_INDEX => 50,
        self::STEP_FORUM => 70,
        self::STEP_INDEX => 100,
    ];

    public static function getFirstStep(): int
    {
        $stepValues = array_values(self::STEPS);
 
        return array_shift($stepValues);
    }

    public static function getFirstStepName(): string
    {
        $stepValues = array_keys(self::STEPS);
 
        return array_shift($stepValues);
    }

    public static function getLastStep(): int
    {
        $stepValues = array_values(self::STEPS);
 
        return array_pop($stepValues);
    }

    public static function getLastStepName(): string
    {
        $stepValues = array_keys(self::STEPS);
 
        return array_pop($stepValues);
    }
}