preg_match struggle

[eluser]Clifford James[/eluser]
I have this code:

Code:

preg_match('int(10)', '/\w+/', $matches);

or

Code:

preg_match('int(10)', '/[\w+]/', $matches);

or

Code:

preg_match('int(10)', '/(\w+)/', $matches);

and this error:

Message: preg_match() [function.preg-match]: Delimiter must not be alphanumeric or backslash

What am I doing wrong here?

[eluser]Clifford James[/eluser]
Lol nvm... is see my problem here... Dang need coffee...