1. <?php
  3. /**
  4. * Indexes content of log entries for short-lived tasks.
  5. *
  6. * @param array $log_entries Array of log entries, each entry is an associative array.
  7. * Example: ['timestamp' => '2023-10-27 10:00:00', 'message' => 'Task started', 'data' => ['key1' => 'value1']]
  8. * @return array Associative array where keys are indexed terms and values are arrays of log entries containing that term.
  9. */
  10. function indexLogEntries(array $log_entries): array
  11. {
  12. $index = [];
  14. foreach ($log_entries as $entry) {
  15. // Iterate through all fields in each log entry
  16. foreach ($entry as $key => $value) {
  17. // Normalize the value to lowercase for consistent indexing
  18. $term = strtolower(trim($value));
  20. // If the term is not empty
  21. if (!empty($term)) {
  22. // If the term is not already a key in the index, create a new array for it
  23. if (!isset($index[$term])) {
  24. $index[$term] = [];
  25. }
  27. // Add the current log entry to the array associated with the term
  28. $index[$term][] = $entry;
  29. }
  30. }
  31. }
  33. return $index;
  34. }
  36. // Example usage:
  37. /*
  38. $log_entries = [
  39. ['timestamp' => '2023-10-27 10:00:00', 'message' => 'Task started', 'data' => ['key1' => 'value1']],
  40. ['timestamp' => '2023-10-27 10:00:05', 'message' => 'Processing data', 'data' => ['key2' => 'value2']],
  41. ['timestamp' => '2023-10-27 10:00:10', 'message' => 'Task completed', 'data' => ['key1' => 'value1']],
  42. ['timestamp' => '2023-10-27 10:00:15', 'message' => 'Error: Invalid data', 'data' => ['key3' => 'value3']]
  43. ];
  45. $index = indexLogEntries($log_entries);
  47. // Print the index (for demonstration)
  48. print_r($index);
  49. */
  51. ?>

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