There are multiple ways to rename entries in a DataFrame:
rename(string $from, string $to) - renames a single entryrenameAll(string $search, string $replace) - renames all entries that contain a given substring and replaces it with another substringrenameAllToLowercase() - renames all entries to lowercaserenameAllStyle(StringStyles|string $style) - renames all entries to a given style (e.g. camel, snakem, kebab, etc.)<?php
declare(strict_types=1);
use function Flow\ETL\DSL\{data_frame, from_array, to_stream};
require __DIR__ . '/../../../autoload.php';
data_frame()
->read(from_array([
['id' => 1, 'name' => 'Norbert', 'joined_id' => 1, 'joined_status' => 'active'],
['id' => 2, 'name' => 'John', 'joined_id' => 2, 'joined_status' => 'inactive'],
['id' => 3, 'name' => 'Jane', 'joined_id' => 3, 'joined_status' => 'active'],
]))
->rename('id', 'user_id')
->renameAll('joined_', '')
->collect()
->write(to_stream(__DIR__ . '/output.txt', truncate: false))
->run();
+---------+----+----------+---------+
| name | id | status | user_id |
+---------+----+----------+---------+
| Norbert | 1 | active | 1 |
| John | 2 | inactive | 2 |
| Jane | 3 | active | 3 |
+---------+----+----------+---------+
3 rows
