I have a form that asks for the URL of a file ($url). I need to get the extension of the file and then check to see if it's acceptable by seeing if it exists in the array.

What I have so far is 

 my @quicktime_ext = qw(
            .sdp .rtsp .rts .mov .qt .smi .sml .smil .avi .vfw .flc.fl
+i .wav .bwf .aiff 
            .aif .aifc .cdda .au .snd .ulw .mid .midi .smf .kar .qcp .
+sd2 .amr .gsm .mpeg 
            .meg .m2s .m1v .ma1 .m75 .m15 .mpm .mpv .mpa .3gp .3gpp .3
+g2 .3gp2 .mp4 .mpg4 
            .m4a .m4p .m4b .m4v .sdv .amc .swa .m3u .m3url .swf .fpx .
+fpix .dv .dif);

  my $ext = $url;
  $ext =~ /$(\..+)/;
  $ext = $1;

[download]
I need help with making sure this is the proper or best regex to go about this. I just need the ext, not the filename. I also don't know how to then check to see if $ext is within the array. I know I could do it by using a hash instead but that seems like overkill. Hopefully a foreach() isn't needed.

Thanks.

In reply to file extensions by coldfingertips

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