1. <?php
  3. /**
  4. * Collection Performance Measurement Tool
  5. *
  6. * Measures the performance of different collection types in PHP.
  7. * Uses a configuration file to define collections to test and number of iterations.
  8. */
  10. // Configuration file path
  11. define('CONFIG_FILE', 'config.ini');
  13. /**
  14. * Loads the configuration from the config file.
  15. *
  16. * @return array An associative array containing the configuration parameters.
  17. */
  18. function loadConfig() {
  19. $config = [];
  20. if (file_exists(CONFIG_FILE)) {
  21. $config = parse_ini_file(CONFIG_FILE);
  22. }
  23. return $config;
  24. }
  26. /**
  27. * Measures the performance of a given collection type.
  28. *
  29. * @param string $collectionType The type of collection to measure (e.g., 'array', 'stdClass', 'array_multisort').
  30. * @param int $iterations The number of iterations to perform.
  31. * @return float The average execution time in milliseconds.
  32. */
  33. function measureCollectionPerformance(string $collectionType, int $iterations = 10000) {
  34. $startTime = microtime(true);
  36. switch ($collectionType) {
  37. case 'array':
  38. $collection = [];
  39. for ($i = 0; $i < $iterations; $i++) {
  40. $collection = array_map(function($x) { return $x * 2; }, range(1, 100));
  41. }
  42. break;
  43. case 'stdClass':
  44. $collection = new stdClass();
  45. for ($i = 0; $i < $iterations; $i++) {
  46. $collection->value = $i;
  47. }
  48. break;
  49. case 'array_multisort':
  50. $collection = [];
  51. for ($i = 0; $i < $iterations; $i++) {
  52. $collection = array_multisort(range(1, 100), range(1, 100));
  53. }
  54. break;
  55. default:
  56. return 0; // Return 0 for unsupported collection types
  57. }
  59. $endTime = microtime(true);
  60. return ($endTime - $startTime) * 1000 / $iterations; // Calculate average time in milliseconds
  61. }
  63. /**
  64. * Main function to run the performance tests.
  65. */
  66. function main() {
  67. $config = loadConfig();
  69. if (!isset($config['collections'])) {
  70. die("Error: 'collections' section not found in config.ini");
  71. }
  73. foreach ($config['collections'] as $collectionType => $iterations) {
  74. if (!is_numeric($iterations) || $iterations <= 0) {
  75. continue; // Skip if iterations is not a positive number
  76. }
  78. $avgTime = measureCollectionPerformance($collectionType, $iterations);
  79. echo "Collection Type: $collectionType, Average Time: " . number_format($avgTime, 4) . " ms\n";
  80. }
  81. }
  83. // Run the main function
  84. if (PHP_SAPI === 'cli') {
  85. main();
  86. }
  88. ?>

Add your comment