1. <?php
  3. /**
  4. * Extracts runtime environment variables from a legacy project's logs.
  5. *
  6. * This script parses log files for specific patterns indicating runtime
  7. * environment information. It focuses on common variables like PHP version,
  8. * server environment, and loaded extensions.
  9. *
  10. * @param string $logFilePath The path to the log file.
  11. * @return array An associative array containing extracted environment variables.
  12. */
  13. function extractRuntimeEnvironment(string $logFilePath): array
  14. {
  15. $environment = [];
  17. if (!file_exists($logFilePath)) {
  18. error_log("Log file not found: " . $logFilePath);
  19. return $environment; // Return empty array if file doesn't exist.
  20. }
  22. $logContent = file_get_contents($logFilePath);
  24. if ($logContent === false) {
  25. error_log("Failed to read log file: " . $logFilePath);
  26. return $environment; // Return empty array if file reading fails.
  27. }
  29. // PHP Version
  30. if (preg_match('/PHP ([\d.]+)/', $logContent, $matches)) {
  31. $environment['php_version'] = trim($matches[1]);
  32. }
  34. // Server Environment (e.g., Apache, Nginx)
  35. if (preg_match('/Server: ([\w\s]+)/i', $logContent, $matches)) {
  36. $environment['server'] = trim($matches[1]);
  37. }
  39. // Operating System
  40. if (preg_match('/OS: ([\w\s]+)/i', $logContent, $matches)) {
  41. $environment['os'] = trim($matches[1]);
  42. }
  44. // PHP Extensions
  45. if (preg_match('/Loaded Configuration File: ([\w\s]+)/', $logContent, $matches)) {
  46. $config_file = trim($matches[1]);
  47. if (strpos($config_file, 'php.ini') !== false) {
  48. $ini_content = file_get_contents($config_file);
  49. if ($ini_content !== false) {
  50. preg_match_all('/extension=(.*)/m', $ini_content, $extension_matches);
  51. $extensions = [];
  52. foreach ($extension_matches[1] as $extension) {
  53. $extensions[] = trim($extension);
  54. }
  55. $environment['php_extensions'] = array_unique($extensions);
  56. }
  57. }
  58. }
  59. // Memory Limit
  60. if (preg_match('/memory_limit\s*=\s*(\d+M)/', $logContent, $matches)) {
  61. $environment['memory_limit'] = $matches[1] . 'M';
  62. }
  64. //Error Reporting Level
  65. if (preg_match('/error_reporting\s*=\s*(\d+)/', $logContent, $matches)) {
  66. $environment['error_reporting'] = $matches[1];
  67. }
  69. return $environment;
  70. }
  72. // Example usage:
  73. $logFile = 'path/to/your/log_file.log'; // Replace with the actual log file path
  74. $runtimeEnvironment = extractRuntimeEnvironment($logFile);
  76. print_r($runtimeEnvironment);
  78. ?>

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