Get revenues from freemius API

get-revenues.php

<?php

// Freemius PHP SDK needs to be installed
require_once dirname(__FILE__) . '/freemius/Freemius.php';

// Set credentials
define( 'FS__API_SCOPE', 'developer' );
define( 'FS__API_DEV_ID', 00000 );
define( 'FS__API_PUBLIC_KEY', 'pk_xxxxxxxxxxxxxxxxxxxxxxxxxxxxx' );
define( 'FS__API_SECRET_KEY', 'sk_xxxxxxxxxxxxxxxxxxxxxxxxxxxxx' );

// Set plugin id
$plugin_id = 00000;

// Init SDK.
$api = new Freemius_Api(
    FS__API_SCOPE,
    FS__API_DEV_ID,
    FS__API_PUBLIC_KEY,
    FS__API_SECRET_KEY
);

// Get subscription data
$offset = 0;
$count = 50;
$revenues = [];
$do_loop = true;
while ( $do_loop ) {

    $data = $api->Api("/plugins/{$plugin_id}/subscriptions.json?count=".$count."&offset=".$offset);
    $countResults = count($data->subscriptions);

    if ( $countResults <= 0) $do_loop = false;

    foreach ( $data->subscriptions as $row ) {
        $revenues[] = $row;
    }

    $offset += $count;

}

// Set file data and header
$filename = date("Y-m-d").".csv";

header('Content-type: application/csv');
header('Content-Disposition: attachment; filename=' . $filename);
header("Content-Transfer-Encoding: UTF-8");

$f = fopen('php://output', 'a');

// Transform stdClass into array
$rev_arr = json_decode(
    json_encode(
        $revenues
    ), true
);

// Get array keys as header columns
$arr_first = json_decode(
    json_encode(
        reset($rev_arr)
    ), true
);

// Set array keys as header columns
fputcsv($f,
    array_keys(
        $arr_first
    ),
'|'
);

// Write data into CSV
foreach ( $rev_arr as $row ) {
    $arr = json_decode( json_encode( $row ), true);
    fputcsv( $f, $arr, '|' );
}

// Close
fclose( $f );