[PHP 5.0] Fonction statique getCheckSum

[loviso]

Bonjour;

Je suis débutant en programmation et j'ai pas arrivé à à comprendre à quoi sert ce code là...

Code :

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public static function getCheckSum($udid, $checks){
 
 try {
 
 $tablo=array("a","8","c","d","e","L","g","h","j","k","l","7","n","o","p","q","V","s","H","u","v","w","x","y","z","1","B","3","4","5","6","m","b","9","A","2","C","D","E","F","G","t","I","J","K","f","M","N","O","P","Q","R","S","T","U","r","W","X","Y","Z"); 
 
  $partcheck = substr($checks,10, 255);
  $ipartcheck = (float)($partcheck);
 
  $valToRemove = 0;    
  for($k=0; $k< 15; ++$k) {
 
   $charval = substr($udid,-($k+1) , 1);
 
   for($c = 0; $c < sizeof($tablo); ++$c)
   {
    if ($tablo[$c]==$charval)
    {
     if ($k == 0) 
      $valToRemove += $c;
     else 
      $valToRemove += $k* 10 * $c;
 
    }
   }
 
  }
 
  $ret = substr($checks,0,10).($ipartcheck - $valToRemove);
  return $ret;
 
 } catch (Exception $ex) {
  throw new BusinessException("Error checksum", BusinessException::ERROR_CHECKSUM);
 }
}

[Celira]

Vu le nom de la fonction, elle sert à calculer un checksum.
Pour plus de détails, il faudrait que tu trouves dans ton code où cette fonction est utilisée et ce qu'elle prend comme paramètres.