unknown modifier

[mb81]

Except for a script that I copied and successfully used, i am a complete novice at regex, but I am trying to do something really simple, but can't get it to work:
[code]
preg_match_all('<td class="center">.</td>',$data,$completegames);
[/code]

I keep getting an error "unknown modifier";

I have used . , \w , \w{1}, and [A-Z] and none of them have worked. It's probably something that I missed in the execution or options.

Can anyone help me with this?

[effigy]

You're not specifying a delimiter; try[tt] /<td class="center">.</td>/[/tt].

[mb81]

That got me on the right track, thanks.

This is what ended up working: \<td class="center">.<\/td>\

Thanks.