Creating Variables

[Anon]

I'm trying to create a variable from component parts. For instance:

I need to take a string of characters, like 'abcd', tack a number on the end, like 0,1 or 2, and then use it in a print statement like a normal PHP variable.

Using:
$a = 0;
$st = 'abcd';

Be able to do this:
print $abcd0;

Any ideas?

[Anon]

For anyone who has the same problem:

$a = 0;

print ${"abcd".$a};