Run a callable up to N times; log each failed attempt and bubble the last exception. Compact, no dependencies, useful for transient failures (S3 puts, email sends, etc.).
PHP
<?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'));Save your own code snippets
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