excluding files listed in array

[mnuzum]

I saw a function someone had written and can't find it now.

Guess I have to write one for myself. Here's what I'm hoping to do.

Read the files from the directory, display them formated. This is already done.

The tricky part is excluding files. Of course I can do:
substr($entry, -3) != 'LCK' && etc.

But the function I'm thinking of did something really elegant, it stored the extensions in an array and then somehow excluded (or included) files with an extension that was in the array.

Is there a quick and easy shortcut for doing this, or do I just write a function that loops through the array one by one and return true if there is a match?

Thanks for your help,
Matt

[Anon]

Well I guess assuming you had an array of file extensions:

$file_ex_arr = arrary("txt","mp3");

then while reading your files, you could test the file:

if(in_array($file_ex_arr,substr($file,-3))) {
// print this file out
}

I dunno if that is exactly what you mean, but hey, its worth a shot 🙂

[mnuzum]

Perfect. I haven't used in_array yet.

Thanks for the tip.

[Anon]

One caution here is in order. The code, as shown, assumes that every file has an extension, and that all extensions are exactly 3 chars long. Neither of these are true in the general case, so unless you know for sure that yours always will and this will never change, you're better off using a regex to extract the last chars of the filename following the last dot.