// Created on savesnippets.com · https://savesnippets.com/dKloDkXRrQ7gyw
<?php
function retry(callable $fn, int $attempts = 3, int $delayMs = 200): mixed {
    for ($i = 1; $i <= $attempts; $i++) {
        try {
            return $fn();
        } catch (Throwable $e) {
            error_log("retry: attempt $i/$attempts failed — {$e->getMessage()}");
            if ($i === $attempts) throw $e;
            usleep($delayMs * 1000 * $i);   // linear back-off
        }
    }
    // unreachable
}

$resp = retry(fn() => httpGet('https://flaky.example.com/data'));