1. <?php
  3. /**
  4. * Measures the performance of user record operations in a sandbox environment.
  5. *
  6. * @param array $users An array of user records.
  7. * @param string $operation The operation to measure ('create', 'read', 'update', 'delete').
  8. * @return array An array containing the execution time in milliseconds.
  9. */
  10. function measureUserRecordPerformance(array $users, string $operation): array
  11. {
  12. $startTime = microtime(true);
  14. switch ($operation) {
  15. case 'create':
  16. // Simulate user creation
  17. foreach ($users as $user) {
  18. // In a real scenario, this would involve database insertion.
  19. // For sandbox, we just perform a simple operation.
  20. $user_id = uniqid(); // Generate a unique ID
  21. // Simulate saving user data (e.g., to a file/cache)
  22. file_put_contents("user_" . $user_id . ".txt", json_encode($user));
  23. }
  24. break;
  26. case 'read':
  27. // Simulate user retrieval
  28. foreach ($users as $user) {
  29. // In a real scenario, this would involve database query.
  30. // For sandbox, we read from simulated storage.
  31. $filename = "user_" . $user['id'] . ".txt";
  32. if (file_exists($filename)) {
  33. $data = file_get_contents($filename);
  34. json_decode($data, true); // Decode JSON
  35. }
  36. }
  37. break;
  39. case 'update':
  40. // Simulate user update
  41. foreach ($users as $user) {
  42. // In a real scenario, this would involve database update.
  43. // For sandbox, we just modify the simulated data.
  44. $filename = "user_" . $user['id'] . ".txt";
  45. if (file_exists($filename)) {
  46. $data = file_get_contents($filename);
  47. $updated_data = json_decode($data, true);
  48. if(is_array($updated_data)){
  49. $updated_data['status'] = 'updated';
  50. file_put_contents($filename, json_encode($updated_data));
  51. }
  52. }
  53. }
  54. break;
  56. case 'delete':
  57. // Simulate user deletion
  58. foreach ($users as $user) {
  59. // In a real scenario, this would involve database deletion.
  60. // For sandbox, we just delete the simulated data.
  61. $filename = "user_" . $user['id'] . ".txt";
  62. if (file_exists($filename)) {
  63. unlink($filename);
  64. }
  65. }
  66. break;
  68. default:
  69. return ['error' => 'Invalid operation specified.'];
  70. }
  72. $endTime = microtime(true);
  73. $executionTime = ($endTime - $startTime) * 1000; // Convert to milliseconds
  75. return ['executionTime' => $executionTime];
  76. }
  78. // Example Usage (Sandbox)
  79. $users = [
  80. ['id' => 1, 'name' => 'Alice', 'email' => 'alice@example.com'],
  81. ['id' => 2, 'name' => 'Bob', 'email' => 'bob@example.com'],
  82. ['id' => 3, 'name' => 'Charlie', 'email' => 'charlie@example.com'],
  83. ];
  85. $results = measureUserRecordPerformance($users, 'create');
  86. echo "Create Operation Time: " . $results['executionTime'] . " ms\n";
  88. $results = measureUserRecordPerformance($users, 'read');
  89. echo "Read Operation Time: " . $results['executionTime'] . " ms\n";
  91. $results = measureUserRecordPerformance($users, 'update');
  92. echo "Update Operation Time: " . $results['executionTime'] . " ms\n";
  94. $results = measureUserRecordPerformance($users, 'delete');
  95. echo "Delete Operation Time: " . $results['executionTime'] . " ms\n";
  97. ?>

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