Renaming a variable

I have a variable called $results and one named $name.

$name = "joe"

I want to add joe into the $results variable in order to create a new variable called $joeresults.

I tried $$name$results $."$name".results etc but can't get anything to work. Any ideas? - An array is not to be used.

$name="joe";
$results="My Results";

${$name."results"}=$results;
echo $joeresults;

Thank you.

There's a Variable Variables article on this site, if you're after more info.