1. <?php
  3. /**
  4. * Schedules the execution of an array of functions/closures with default values.
  5. *
  6. * @param array $scheduled_functions An array of arrays, where each inner array contains:
  7. * - 'name': The name of the function/closure to execute.
  8. * - 'args': An array of default arguments.
  9. * - 'delay': The delay in seconds before execution.
  10. * @return void
  11. */
  12. function schedule_functions(array $scheduled_functions): void
  13. {
  14. foreach ($scheduled_functions as $function_data) {
  15. $function_name = $function_data['name'];
  16. $default_args = $function_data['args'];
  17. $delay = $function_data['delay'];
  19. // Ensure the function exists
  20. if (!function_exists($function_name)) {
  21. error_log("Function '$function_name' not found.");
  22. continue;
  23. }
  25. // Create a wrapper function to capture the default arguments
  26. $wrapper_function = function () use ($function_name, ...$default_args) {
  27. call_user_func($function_name, ...$default_args);
  28. };
  30. // Use `usleep` for precise delays (microseconds)
  31. $sleep_time = (int)($delay * 1000000);
  32. usleep($sleep_time);
  34. // Execute the wrapped function
  35. $wrapper_function();
  36. }
  37. }
  39. // Example Usage (Sandbox)
  40. if (PHP_SAPI === 'cli') { //Only run in CLI
  41. // Define some example functions
  42. function sandbox_function1(string $message, int $number): void
  43. {
  44. echo "Function 1 executed: Message = " . $message . ", Number = " . $number . PHP_EOL;
  45. }
  47. function sandbox_function2(float $value): void
  48. {
  49. echo "Function 2 executed: Value = " . $value . PHP_EOL;
  50. }
  52. // Schedule the functions
  53. $scheduled_tasks = [
  54. ['name' => 'sandbox_function1', 'args' => ['Hello', 123], 'delay' => 2], // Execute after 2 seconds
  55. ['name' => 'sandbox_function2', 'args' => [3.14], 'delay' => 1], // Execute after 1 second.
  56. ['name' => 'nonexistent_function', 'args' => [], 'delay' => 3], // This will log an error
  57. ];
  59. schedule_functions($scheduled_tasks);
  60. }
  61. ?>

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