Examples

Data frame

Description

Choose specific columns from your data, discarding the rest. Transformations like select help keep pipelines readable and explicit about which data is being processed.

Documentation

Transformations

Code

<?php

declare(strict_types=1);

use function Flow\ETL\DSL\{data_frame, from_array, select, to_output};

require __DIR__ . '/vendor/autoload.php';

data_frame()
    ->read(
        from_array([
            ['id' => 1, 'first_name' => 'John', 'last_name' => 'Doe'],
            ['id' => 2, 'first_name' => 'Jane', 'last_name' => 'Smith'],
            ['id' => 3, 'first_name' => 'Bob', 'last_name' => 'Johnson'],
            ['id' => 4, 'first_name' => 'Alice', 'last_name' => 'Williams'],
        ])
    )
    ->with(select('id'))
    ->collect()
    ->write(to_output(truncate: false))
    ->run();

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