[Resolvido] Deprecated: Function ereg() is deprecated in C:\

Alguem me ajude

--------------------estou usando PHP-5.3.2 -------------------------------------

Deprecated: Function ereg() is deprecated in C:\Arquivos de programas\EasyPHP-5.3.2i\www\site12\siteadmin\login.php on line 13

<?

require_once("conn.php");

if(isset($_POST['s2']))

	$MyUsername1 = strip_tags($_POST['username1']);
	$MyPassword1 = strip_tags($_POST['password1']);

	if(empty($MyUsername1) || empty($MyPassword1))
	{
 $MyError = "<center><font color=red size=2 face=verdana><b>All fields are required!</b></font></center>";
	}
 elseif((strlen($MyUsername1) < 4) || ($MyUsername1 > 20) || (ereg("[[:punct:]]", $MyUsername1)))
	{
 $MyError = "<center><font color=red size=2 face=verdana><b>The username must be between 4 and 20 characters long and consist of only letters and numbers.</b></font></center>";
	}
	elseif((strlen($MyPassword1) < 4) || ($MyPassword1 > 20) || (ereg("[[:punct:]]", $MyPassword1)))
}
?>