PHP Warning: urgentissimo da risolvere pls

[sOoN92]

Salve a tutti,

uno script da me scritto non funziona... mi sapete dire il perché?

[08-Jul-2011 01:17:25] PHP Warning: mysql_real_escape_string() [function.mysql-real-escape-string]: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /home/nicolamo/public_html/lib/helpers.php on line 102
[08-Jul-2011 01:17:25] PHP Warning: mysql_real_escape_string() [function.mysql-real-escape-string]: A link to the server could not be established in /home/nicolamo/public_html/lib/helpers.php on line 102


Ecco la funzione:

function filter_parameters($array) 
{        
  if(is_array($array)) 
  {
    foreach($array as $key => $value) 
    {
      if(is_array($array[$key]))
      {
        $array[$key] = filter_parameters($array[$key]);
      }

      if(is_string($array[$key]))
      {
(RIGA 102) $array[$key] = mysql_real_escape_string($array[$key]);
      }    
    }            
  }

  if(is_string($array))
  {
    $array = mysql_real_escape_string($array);
  }

  return $array;
}