As Andy said, meta can be used, but if you don't want to use the head or wait...
<META HTTP-EQUIV="refresh" content="0;URL=URL IN HERE">
Where content=#, where # in the number of seconds, however, this type of refresh, even if set to zero takes a split second and can be stopped by hitting stop, just about...
A slightly faster way is
header "Location: "URL IN HERE");
but note that header() has to be in the code before any output statement, including white-space not enclosed by PHP tags.
ie:
//top of page
<?
header() ... is fine
//top of page
<?
header() ... will give an error
Likewise:
<?
echo "Something";
header() ... will give an error
Hope that helps.