flow php

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Example: Array expand

Topic: Transformations

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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\{
    array_expand,
    data_frame,
    from_rows,
    int_entry,
    json_entry,
    ref,
    row,
    rows,
    to_stream};

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

data_frame()
    ->read(from_rows(rows(
        row(int_entry('id', 1), json_entry('array', ['a' => 1, 'b' => 2, 'c' => 3])),
    )))
    ->withEntry('expanded', array_expand(ref('array')))
    ->write(to_stream(__DIR__ . '/output.txt', truncate: false))
    ->run();

Output

+----+---------------------+----------+
| id |               array | expanded |
+----+---------------------+----------+
|  1 | {"a":1,"b":2,"c":3} |        1 |
|  1 | {"a":1,"b":2,"c":3} |        2 |
|  1 | {"a":1,"b":2,"c":3} |        3 |
+----+---------------------+----------+
3 rows

Examples

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