Is there a maximum amount of data I can have "floating around?"

In PHP I am generating several arrays pulling "lists" from MySQL. Then I am dynamically writing HTML to a web page with while loops for pulldown menus.

However, for some strange reason - the arrays are coming out with a zero count (count($array)). If I comment some out others appear. I am pretty certain I am not overwriting the arrays cause I have named them all uniquely.

Any ideas?

OK I have fixed 3 pulldowns by rewriting the array and while loops. This has got to be syntax related. (although I have been copying and pasting from working arrays and while loops... so I can't SEE the error. Damn I'm tired. Been at this since 10AM.

12:49 AM GRRRRRRRRRRRRRRRRR!!! It was ALL syntax and I found the stupid error. I was declaring the same array over and over. Kick me.

At lease I found out there is a max memory, although I doubt I was even close to mine.

Thanks everybody.