Documentation
Example: Sort
Topic: Transformations
composer.json
{
"name": "flow-php/examples",
"description": "Flow PHP - Examples",
"license": "MIT",
"type": "library",
"require": {
"flow-php/etl": "1.x-dev"
}
}code.php<?php
declare(strict_types=1);
use function Flow\ETL\DSL\{data_frame, from_sequence_number, ref, to_stream};
require __DIR__ . '/vendor/autoload.php';
data_frame()
->read(from_sequence_number('id', 0, 10))
->sortBy(ref('id')->desc())
->collect()
->write(to_stream(__DIR__ . '/output.txt', truncate: false))
->run();
Output
+----+
| id |
+----+
| 10 |
| 9 |
| 8 |
| 7 |
| 6 |
| 5 |
| 4 |
| 3 |
| 2 |
| 1 |
| 0 |
+----+
11 rows
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