Erreur -> mysql_fetch_array():

Bonjour à tous,

Je suis un débutant en PHP et j'essais d'installer un programme mais il m'affiche ces codes d'erreurs :


Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in /home/warriori/public_html/class/ClassMysql.php on line 75

Warning: mysql_free_result(): supplied argument is not a valid MySQL result resource in /home/warriori/public_html/class/ClassMysql.php on line 82


et voici le code du fichier:

class DB
{
  var $Host = C_DB_HOST;      // Hostname of our MySQL server
  var $Database = C_DB_NAME;    // Logical database name on that server
  var $User = C_DB_USER;      // Database user
  var $Password = C_DB_PASS;    // Database user's password
  var $Link_ID = 0;       // Result of mysql_connect()
  var $Query_ID = 0;        // Result of most recent mysql_query()
  var $Record = array();      // Current mysql_fetch_array()-result
  var $Row;           // Current row number
  var $Errno = 0;         // Error state of query
  var $Error = "";

   function halt($msg) {
      echo "\n\n";
      echo "<!-- DATABASE ERROR:\n";
      echo "ERRNO: ".$this->Errno."\n";
      echo "ERROR: ".$this->Error."\n";
      echo "MSG:".$msg."\n";
      echo "-->\n";
      echo "\n\n";
   }

  function connect()
  {
    if($this->Link_ID == 0)
    {
      $this->Link_ID = mysql_connect($this->Host, $this->User, $this->Password);
      if (!$this->Link_ID)
      {
        $this->halt("Link_ID == false, connect failed");
      }
      $SelectResult = mysql_select_db($this->Database, $this->Link_ID);
      if(!$SelectResult)
      {
        $this->Errno = mysql_errno($this->Link_ID);
        $this->Error = mysql_error($this->Link_ID);
        $this->halt("cannot select database <I>".$this->Database."</I>");
      }
    }
  }

  function query($Query_String)
  {
    $this->connect();
    $this->Query_ID = mysql_query($Query_String,$this->Link_ID);
    $this->Row = 0;
    $this->Errno = mysql_errno();
    $this->Error = mysql_error();
    if (!$this->Query_ID)
    {
      $this->halt("Invalid SQL: ".$Query_String);
    }
    return $this->Query_ID;
  }

  function next_record()
  {
    $this->Record = mysql_fetch_array($this->Query_ID);
    $this->Row += 1;
    $this->Errno = mysql_errno();
    $this->Error = mysql_error();
    $stat = is_array($this->Record);
    if (!$stat)
    {
      mysql_free_result($this->Query_ID);
      $this->Query_ID = 0;
    }
    return $this->Record;
  }

  function num_rows()
  {
    return mysql_num_rows($this->Query_ID);
  }

  function clean_results()
  {
    if($this->Query_ID != 0) mysql_free_result($this->Query_ID);
  }

  function close()
  {
    if($this->Link_ID != 0) mysql_close($this->Link_ID);
  }
}

?>


Si vous pouvez m'aider j'apprécierais beaucoup.

Kaydara