[SOLVED] filesize() problems

[tbare]

here's the url:

example.com/humor_video_play.php?file=CircleCircleDotDot.avi

 

here's the code:

$file = $_GET['file'];
$size = filesize('files/video/$file');
print "$size";

 

here's the error:

Warning: filesize() [function.filesize]: stat failed for files/video/$file in /home/tbare/wannafork/humor_video_play.php on line 37

 

any ideas?

[tbare]

UPDATE:

 

if i manually specify the file name like so:

$size = filesize('files/video/CircleCircleDotDot.avi');

 

it works, but not if i pull the file name from $file like so:

$size = filesize('files/video/$file');

 

why doesn't that work?

[trq]

Variables are not interpolated within single quotes.

 

$size = filesize("files/video/$file");

[tbare]

yeah.. just figured it out... thanks!

 

$size = filesize('files/video/' . $file);