1. <?php
  3. /**
  4. * Validates environment variables.
  5. *
  6. * @param array $expectedVariables An array of environment variable names to validate.
  7. * @param callable $validator A callback function that takes the variable name and value as arguments and returns true on success, false on failure.
  8. * @return array An array of validation results, where each element is an array containing the variable name and validation status.
  9. */
  10. function validateEnvironmentVariables(array $expectedVariables, callable $validator): array
  11. {
  12. $results = [];
  14. foreach ($expectedVariables as $variableName) {
  15. $value = getenv($variableName); // Get the environment variable value
  17. if ($value === null) {
  18. $results[] = ["variable" => $variableName, "status" => "missing"]; // Variable is missing
  19. continue;
  20. }
  22. if (!$validator($variableName, $value)) {
  23. $results[] = ["variable" => $variableName, "status" => "invalid"]; // Validation failed
  24. } else {
  25. $results[] = ["variable" => $variableName, "status" => "valid"]; // Validation passed
  26. }
  27. }
  29. return $results;
  30. }
  32. // Example validator function (customize as needed)
  33. function validateStringLength(string $variableName, string $value, int $minLength = 1, int $maxLength = PHP_INT_MAX): bool
  34. {
  35. return strlen($value) >= $minLength && strlen($value) <= $maxLength;
  36. }
  39. // Example usage:
  40. //$variablesToValidate = ["API_KEY", "DATABASE_URL", "DEBUG"];
  41. //$validationResults = validateEnvironmentVariables($variablesToValidate, function (string $name, string $value) {
  42. // return validateStringLength($name, $value, 10, 255); // Validate string length
  43. //});
  44. //
  45. //print_r($validationResults);
  47. ?>

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