Checking for file-extensions in PHP with Regular expressions

Question

I\'m reading all the files in a single directory and I want to filter on JPG,JPEG,GIF and PNG.

Both capital and small letters. Those are the only files to be accepte

Answer 1

I think something is wrong with your regex. Try testing regexes here first: https://www.regexpal.com/

I think this one might work for you:

/^.*\.(jpg|jpeg|png|gif)$/i

Note the /i at the end - this is the "case insensitive" flag, saves you having to type out all permutations :)