Obtaining Values Between Characters

[Stephen]

As I am not skilled in Regex, I am having trouble with this line of code. I use this:

preg_match_all('/f_[a-zA-Z0-9]*_/', $string, $match);

to locate the string (including f_ and _). For example, I have a function named f_get_value_ and f_set_value_ and I would like to locate these function names. However, when I do print_r($match[0]), it returns with:

Array
(
    [0] => f_set_
    [1] => f_get_
)

Obviously it is cutting it off at the first underscore it comes across (after f_) rather than what I want it to do (cut it off at the final underscore). I cannot guarantee that there will be only 1 underscore between the words (get/set_value). There could be 2, 3, 4, or more. I am looking for a regular expression that will accomplish this goal and I thank anyone who attempts to help.

[.josh]

need to add an underscore to your char class [a-zA-Z0-9_]

[Stephen]

need to add an underscore to your char class [a-zA-Z0-9_]

Thanks a lot, that worked . (off topic, but I remember you from when I frequented phpfreaks ^^)