ForRo/app/Http/Controllers/ExportController.php

<?php

namespace App\Http\Controllers;

use App\Models\Location;
use App\Models\Source;

class ExportController extends Controller
{
    public function exportIndex()
    {
        return view('front.exports', [
            'title' => "Exports"
        ]);
    }

    //
    public function exportCSV($type, $percent)
    {
        $columns = [];
        $list    = [];

        $locations = Location::where("active", true)->get();
        $sources   = Source::where("active", true)->get();
        if ($type == 'mastodon') {
            $columns = [
                'domain',
                'severity',
                'public_comment',
                'reject_media',
                'reject_reports',
                'obfuscate',
            ];
        };

        foreach ($locations as $location) {
            $total = $location->block_count + $location->silence_count;
            if ($total >= 2) {
                $rate = $total / count($sources);
                if ($rate * 100 >= $percent) {
                    if ($type == 'mastodon') {
                        $comments = str_replace(",", ";", $location->description);
                        array_push($list, [$location->url, $location->rating, $comments, "FALSE", "FALSE", "FALSE"]);
                    }
                }
            }
        }

        header('Content-Type: text/csv');
        header('Content-Disposition: attachment; filename=' . $type . "-" . $percent);

        echo implode(',', $columns) . PHP_EOL;
        foreach ($list as $item) {
            echo implode(',', $item) . PHP_EOL;
        }
    }
}