if() statement with file extensions?

[scbmx]

anyone know how i can use the if() statement with the file extension so that i can have my code do certain things with certain file names while reading a dir.

so
(just an example to show you what i want, i know its wrong)

if(ext == .gif){
show .gif file names here
}else{
all others go here
}

how could i do something like that?

[DigitalExpl0it]

I think using preg_match() well work

maybe somthing like this

if (preg_match(".gif", $string)) {

} else {

} 

sorry its somthing I just thru together really fast

[scbmx]

thanks i tried it on a little test script and it workedtest script