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  1. <?php
  2.  
  3. $_REQUEST = [
  4.     "username" => "admin",
  5.     "password" => "pass",
  6.     "credit_card" => "000000"
  7. ];
  8.  
  9. $_SESSION = [
  10.     "id" => 1
  11. ];
  12.  
  13. function create_log($filename, $log)
  14. {
  15.     // Copia as superglobais para variáveis locais:
  16.     $request = $_REQUEST;
  17.     $session = $_SESSION;
  18.  
  19.     // Define quais são as informações sensíveis:
  20.     $filter = ["password", "credit_card"];
  21.  
  22.     // Filtra as informações sensíveis:
  23.     $request = array_filter($request, function ($key) use ($filter) {
  24.         return !in_array($key, $filter);
  25.     }, ARRAY_FILTER_USE_KEY);
  26.  
  27.     $session = array_filter($session, function ($key) use ($filter) {
  28.         return !in_array($key, $filter);
  29.     }, ARRAY_FILTER_USE_KEY);
  30.  
  31.     // Gera a mensagem de log:
  32.     // file_put_contents( 
  33.     //     $filename.'.log', '[START]'.
  34.     //     json_encode($request).PHP_EOL.
  35.     //     json_encode($session).PHP_EOL.
  36.     //     "Log ".$log.PHP_EOL.'[END]'.PHP_EOL
  37.     // , FILE_APPEND );
  38.  
  39.     var_dump($request);
  40.     var_dump($session);
  41. }
  42.  
  43. create_log("foo", "Mensagem de log");
  44.  
  45. // Variáveis globais não foram alteradas:
  46. var_dump($_REQUEST);
  47. var_dump($_SESSION);
Success #stdin #stdout 0s 82880KB
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array(1) {
  ["username"]=>
  string(5) "admin"
}
array(1) {
  ["id"]=>
  int(1)
}
array(3) {
  ["username"]=>
  string(5) "admin"
  ["password"]=>
  string(4) "pass"
  ["credit_card"]=>
  string(6) "000000"
}
array(1) {
  ["id"]=>
  int(1)
}
https://ideone.com/dNIpE6
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
secret

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