Simple URL health check queue based on HTTP status code (using PHP and cURL)

healthcheck

#!/usr/bin/php
<?php
$urlsFile = file_get_contents('./healthcheck.txt');
$urls = split("\n", $urlsFile);
$filteredList = array_filter($urls, function ($entry) {
  return !empty($entry) && substr($entry, 0, 1) != '#';
});

$failedRequests = (bool) array_reduce($filteredList, function ($acc, $entry) {
  $url = split(' ', $entry)[0];
  $expectedCode = split(' ', $entry)[1];
  $statusCode = (int) exec('curl -s -o /dev/null -w "%{http_code}" ' . $url);
  echo "{$url} >>> {$statusCode}/{$expectedCode}\n";
  if ($expectedCode != $statusCode) $acc++;
  return $acc;
}, 0);

if ($failedRequests) exit(1);
exit(0);

healthcheck.txt

# the script will finish with 0 if all URL status codes have matched the expected code
https://google.com 200
https://github.com 200