> For the complete documentation index, see [llms.txt](https://php-etl.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://php-etl.gitbook.io/docs/helpers.md).

# Helpers

Besides the three common steps in an ETL process (extract, transform and load), we provide some helpers to assist you with the process data flow.

## Skipping initial lines

To skip a determined number of rows on the beginning of the process, you may use the `skip` method, passing the number of rows to skip as a parameter:

```php
$etl->skip(1);
```

## Limiting the output rows

To limit the maximum number of output rows of the process, you may use the `limit` method, passing the maximum number of rows as a parameter:

```php
$etl->limit(100);
```