reg. email expressie

<?php
$name = "stijn-leenknegt@hot-mail.com";
if(!ereg("^[-_\.0-9a-z]+@([-\0-9a-z][0-9a-z]+\.)+[a-z]{2,4}$", $name))
{
	echo "niet correct";
}
else
{
	echo "correct";
}
?>

<?php
$name = "stijn-leenknegt@hot-mail.com";
if(!ereg("^[-_\.0-9a-z]+@([-\0-9a-z][0-9a-z]+\.)+[a-z]{2,4}$", $name))
{
	echo "niet correct";
}
else
{
	echo "correct";
}
?>