UNIFIED DATA PROCESSING FRAMEWORK

composer require flow-php/etl ~0.32.0

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Extracts

Read from various data sources.

Transforms

Shape and optimize for your needs.

Loads

Store and secure in one of many available data sinks.

Examples:

Description

Read partitioned data after writing with overwrite mode. Each partition contains exactly one file with the latest data.

Documentation

Code

<?php

declare(strict_types=1);

use function Flow\ETL\Adapter\CSV\{from_csv, to_csv};
use function Flow\ETL\DSL\{data_frame, from_array, overwrite, ref, to_output};

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

$outputPath = __DIR__ . '/output';

data_frame()
    ->read(from_array(
        [
            ['id' => 1, 'color' => 'red', 'name' => 'Widget'],
            ['id' => 2, 'color' => 'blue', 'name' => 'Gadget'],
        ]
    ))
    ->partitionBy(ref('color'))
    ->mode(overwrite())
    ->write(to_csv($outputPath . '/products.csv'))
    ->run();

data_frame()
    ->read(from_csv($outputPath . '/color=*/*.csv'))
    ->write(to_output(truncate: false))
    ->run();

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