1. <?php
  3. /**
  4. * Simple Log File Indexer
  5. *
  6. * Indexes lines from log files, providing a basic search interface.
  7. */
  9. /**
  10. * Indexes log files.
  11. *
  12. * @param array $log_files Array of log file paths.
  13. * @return array Associative array where keys are line numbers and values are the corresponding lines.
  14. */
  15. function indexLogFiles(array $log_files): array
  16. {
  17. $index = [];
  19. foreach ($log_files as $log_file) {
  20. if (file_exists($log_file)) {
  21. $lines = file($log_file, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
  22. for ($i = 0; $i < count($lines); $i++) {
  23. $index[$i + 1] = $lines[$i]; // Line number starts from 1
  24. }
  25. } else {
  26. error_log("Log file not found: " . $log_file);
  27. }
  28. }
  30. return $index;
  31. }
  33. /**
  34. * Searches the indexed log data.
  35. *
  36. * @param array $index The indexed log data.
  37. * @param string $search_term The term to search for.
  38. * @return array Array of line numbers containing the search term.
  39. */
  40. function searchLog(array $index, string $search_term): array
  41. {
  42. $results = [];
  43. $search_term = strtolower($search_term); // Case-insensitive search
  45. foreach ($index as $line_number => $line) {
  46. if (stripos($line, $search_term) !== false) {
  47. $results[] = $line_number;
  48. }
  49. }
  51. return $results;
  52. }
  55. // Example Usage
  56. if (count($argv) < 2) {
  57. echo "Usage: php index_logs.php <log_file1> <log_file2> ... [search_term]\n";
  58. exit(1);
  59. }
  61. $log_files = array_slice($argv, 1);
  63. $index = indexLogFiles($log_files);
  65. if (isset($argv[2])) {
  66. $search_term = strtolower($argv[2]);
  67. $results = searchLog($index, $search_term);
  69. if (!empty($results)) {
  70. echo "Found in lines: " . implode(", ", $results) . "\n";
  71. } else {
  72. echo "No matches found for '" . $search_term . "'\n";
  73. }
  74. } else {
  75. //Output index
  76. foreach ($index as $line_number => $line) {
  77. echo $line_number . ": " . $line . "\n";
  78. }
  79. }
  81. ?>

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