Array Symbol Suggestion

I'd like to make a suggestion for a change, or possibly an addition, to the PHP language. I'm learning PHP and have been very excited with what it can do in relation to HTML. But when I got to the part about arrays, I was disappointed to see that they are designated with a $ the same as other variables. I was learning Perl before I switched, and it uses the @ sign to designate an array. That makes it a lot simpler to see at a glance what is an array and what isn't - at least for beginners like me. Has there been any talk of adopting the @ sign for arrays in PHP? Or is that symbol used for something else that I haven't read about yet? What is the proper channel for making suggestions like this? Thanks, Marc