Description:
------------
Hello,

mysql_connect does not works if host is localhost, correct if host is 127.0.0.1

In the exemple below :
$db_host = "localhost"; //Does not work
$db_host = "127.0.0.1"; //Works

No problem with version 5.3.0.

Best regards

Reproduce code:
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  function __construct($db_host, $db_username, $db_password, $db_name) {
    $this->link_id = mysql_connect($db_host, $db_username, $db_password);
    if ($this->link_id) {
      if (@mysql_select_db($db_name, $this->link_id)) return $this->link_id;
      else error('Impossible de se connecter ? la base de donn?es. MySQL dit : '.mysql_error(), __FILE__, __LINE__);
    }
    else error('Impossible de se connecter au serveur MySql. MySQL dit : '.mysql_error(), __FILE__, __LINE__);
  }


Expected result:
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Connecting to data base