Retry all failed laravel jobs without causing a memory leak

retry.php

<?php
$pdo = new PDO(
    sprintf(
        'mysql:host=%s;dbname=%s',
        getenv('DB_HOST'),
        getenv('DB_DATABASE')
    ),
    getenv('DB_USERNAME'),
    getenv('DB_PASSWORD')
);
$rows = $pdo->query('select id from failed_jobs')->fetchAll();
$count = count($rows);

echo sprintf("%d failed jobs found\n", $count);

foreach ($rows as $index => $row) {
    echo sprintf(
        "%08d/%08d: %s\n",
        $index,
        $count,
        exec(sprintf('php artisan queue:retry %d', $row['id']))
    );
}