NonStopableProcess.php

<?php

/**
 * Runs a PHP script that can be stopped only with a SIGKILL (9) signal for 3 seconds
 *
 * @args duration Run this script with a custom duration
 *
 * @example `php NonStopableProcess.php 42` will run the script for 42 seconds
 */
function handleSignal($signal) {
  switch ($signal) {
    case SIGTERM:
      $name = 'SIGTERM';
      break;
    case SIGINT:
      $name = 'SIGINT';
      break;
    default:
      $name = $signal . ' (unknown)';
      break;
  }
  echo "received signal {$name}\n";
}
declare (ticks=1);
pcntl_signal(SIGTERM, 'handleSignal');
pcntl_signal(SIGINT, 'handleSignal');
$duration = isset($argv[1]) ? (int) $argv[1] : 3;
$start = microtime(true);
while ($duration > microtime(true) - $start) {
  usleep(1000);
}